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class="profile-avatar u-positionAbsolute" alt="Wenlei Song" border="0" onerror="if (this.src != '//a.academia-assets.com/images/s200_no_pic.png') this.src = '//a.academia-assets.com/images/s200_no_pic.png';" width="200" height="200" src="https://0.academia-photos.com/4244633/1680817/2019841/s200_wenlei.song.jpg" /></div><div class="title-container"><h1 class="ds2-5-heading-sans-serif-sm">Wenlei Song</h1><div class="affiliations-container fake-truncate js-profile-affiliations"><div><a class="u-tcGrayDarker" href="https://pku.academia.edu/">Peking University</a>, <a class="u-tcGrayDarker" href="https://pku.academia.edu/Departments/Sch_of_Earth_Space_Sci/Documents">Sch of Earth & Space Sci</a>, <span class="u-tcGrayDarker">Graduate Student</span></div></div></div></div><div class="sidebar-cta-container"><button class="ds2-5-button hidden profile-cta-button grow js-profile-follow-button" data-broccoli-component="user-info.follow-button" data-click-track="profile-user-info-follow-button" 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class="js-profile-total-view-text">Public Views</span></p><p class="data"><span class="js-profile-view-count"></span></p></div></span></div></div></div><div class="right-panel-container"><div class="user-content-wrapper"><div class="uploads-container" id="social-redesign-work-container"><div class="upload-header"><h2 class="ds2-5-heading-sans-serif-xs">Uploads</h2></div><div class="documents-container backbone-social-profile-documents" style="width: 100%;"><div class="u-taCenter"></div><div class="profile--tab_content_container js-tab-pane tab-pane active" id="all"><div class="profile--tab_heading_container js-section-heading" data-section="Papers" id="Papers"><h3 class="profile--tab_heading_container">Papers by Wenlei Song</h3></div><div class="js-work-strip profile--work_container" data-work-id="3565677"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/3565677/A_unique_Mo_deposit_associated_with_carbonatites_in_the_Qinling_orogenic_belt_central_China"><img alt="Research paper thumbnail of A unique Mo deposit associated with carbonatites in the Qinling orogenic belt, central China" class="work-thumbnail" src="https://attachments.academia-assets.com/50227264/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/3565677/A_unique_Mo_deposit_associated_with_carbonatites_in_the_Qinling_orogenic_belt_central_China">A unique Mo deposit associated with carbonatites in the Qinling orogenic belt, central China</a></div><div class="wp-workCard_item"><span>Lithos</span><span>, 2010</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The Qinling molybdenum belt is a prominent metallogenic structure in central China hosting severa...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The Qinling molybdenum belt is a prominent metallogenic structure in central China hosting several significant porphyry- and porphyry–skarn-type deposits. The Huanglongpu Mo deposit in the north-western part of the belt is unique in that it is associated with carbonatite dykes, rather than felsic magmatism. The carbonatites are composed largely of Sr–Mn-rich calcite and characterized by high concentrations of Sr and rare-earth elements (REE), and stable-isotope values indicative of a mantle source (δ13CPDB = − 6.7 ± 0.2‰ and δ18OSMOW = 8.2 ± 1.0‰). Molybdenite is associated with galena and REE minerals (parisite, bastnäsite and monazite). Both molybdenite and galena are characterized by high Re contents (up to 0.4 and 0.2 wt.%, respectively) and Re/(Mo, Pb) ratios approaching the primitive-mantle values. In contrast to the rock-forming calcite, the REE minerals are enriched in light REE, whose relative proportion increases from parisite-(Ce) [average (La/Nd)n = 2.1] to bastnäsite-(Ce) and monazite-(Ce) [average (La/Nd)n = 3.1, 4.6, respectively]. The whole-rock compositions are characterized by some of the highest Mo and heavy REE abundances reported for carbonatites to date: up to 1010 ppm Mo, 1130 ppm Y + Gd…Lu and (La/Yb)n = 1.2–2.7. The unusual trace-element geochemistry of the Huanglongpu rocks may ultimately reflect the composition of their mantle source, but their enrichment in Mo + Re was undoubtedly enhanced through preferential partitioning of these elements into a light REE–Pb–S-rich fluid derived from the carbonatitic magma modified by calcite fractionation. The present work shows that Mo can be retained, transported and deposited by carbonatitic fluids capable of generating economic Mo deposits.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5d182c9f97351b0cc573f324e524020e" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":50227264,"asset_id":3565677,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/50227264/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="3565677"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="3565677"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 3565677; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=3565677]").text(description); $(".js-view-count[data-work-id=3565677]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 3565677; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='3565677']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 3565677, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "5d182c9f97351b0cc573f324e524020e" } } $('.js-work-strip[data-work-id=3565677]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":3565677,"title":"A unique Mo deposit associated with carbonatites in the Qinling orogenic belt, central China","translated_title":"","metadata":{"abstract":"The Qinling molybdenum belt is a prominent metallogenic structure in central China hosting several significant porphyry- and porphyry–skarn-type deposits. The Huanglongpu Mo deposit in the north-western part of the belt is unique in that it is associated with carbonatite dykes, rather than felsic magmatism. The carbonatites are composed largely of Sr–Mn-rich calcite and characterized by high concentrations of Sr and rare-earth elements (REE), and stable-isotope values indicative of a mantle source (δ13CPDB = − 6.7 ± 0.2‰ and δ18OSMOW = 8.2 ± 1.0‰). Molybdenite is associated with galena and REE minerals (parisite, bastnäsite and monazite). Both molybdenite and galena are characterized by high Re contents (up to 0.4 and 0.2 wt.%, respectively) and Re/(Mo, Pb) ratios approaching the primitive-mantle values. In contrast to the rock-forming calcite, the REE minerals are enriched in light REE, whose relative proportion increases from parisite-(Ce) [average (La/Nd)n = 2.1] to bastnäsite-(Ce) and monazite-(Ce) [average (La/Nd)n = 3.1, 4.6, respectively]. The whole-rock compositions are characterized by some of the highest Mo and heavy REE abundances reported for carbonatites to date: up to 1010 ppm Mo, 1130 ppm Y + Gd…Lu and (La/Yb)n = 1.2–2.7. The unusual trace-element geochemistry of the Huanglongpu rocks may ultimately reflect the composition of their mantle source, but their enrichment in Mo + Re was undoubtedly enhanced through preferential partitioning of these elements into a light REE–Pb–S-rich fluid derived from the carbonatitic magma modified by calcite fractionation. The present work shows that Mo can be retained, transported and deposited by carbonatitic fluids capable of generating economic Mo deposits.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Lithos"},"translated_abstract":"The Qinling molybdenum belt is a prominent metallogenic structure in central China hosting several significant porphyry- and porphyry–skarn-type deposits. The Huanglongpu Mo deposit in the north-western part of the belt is unique in that it is associated with carbonatite dykes, rather than felsic magmatism. The carbonatites are composed largely of Sr–Mn-rich calcite and characterized by high concentrations of Sr and rare-earth elements (REE), and stable-isotope values indicative of a mantle source (δ13CPDB = − 6.7 ± 0.2‰ and δ18OSMOW = 8.2 ± 1.0‰). Molybdenite is associated with galena and REE minerals (parisite, bastnäsite and monazite). Both molybdenite and galena are characterized by high Re contents (up to 0.4 and 0.2 wt.%, respectively) and Re/(Mo, Pb) ratios approaching the primitive-mantle values. In contrast to the rock-forming calcite, the REE minerals are enriched in light REE, whose relative proportion increases from parisite-(Ce) [average (La/Nd)n = 2.1] to bastnäsite-(Ce) and monazite-(Ce) [average (La/Nd)n = 3.1, 4.6, respectively]. The whole-rock compositions are characterized by some of the highest Mo and heavy REE abundances reported for carbonatites to date: up to 1010 ppm Mo, 1130 ppm Y + Gd…Lu and (La/Yb)n = 1.2–2.7. The unusual trace-element geochemistry of the Huanglongpu rocks may ultimately reflect the composition of their mantle source, but their enrichment in Mo + Re was undoubtedly enhanced through preferential partitioning of these elements into a light REE–Pb–S-rich fluid derived from the carbonatitic magma modified by calcite fractionation. The present work shows that Mo can be retained, transported and deposited by carbonatitic fluids capable of generating economic Mo deposits.","internal_url":"https://www.academia.edu/3565677/A_unique_Mo_deposit_associated_with_carbonatites_in_the_Qinling_orogenic_belt_central_China","translated_internal_url":"","created_at":"2013-05-19T21:51:03.802-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":4244633,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":50227264,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/50227264/thumbnails/1.jpg","file_name":"j.lithos.2010.03.01320161110-30224-xnk97b.pdf","download_url":"https://www.academia.edu/attachments/50227264/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"A_unique_Mo_deposit_associated_with_carb.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/50227264/j.lithos.2010.03.01320161110-30224-xnk97b-libre.pdf?1478773673=\u0026response-content-disposition=attachment%3B+filename%3DA_unique_Mo_deposit_associated_with_carb.pdf\u0026Expires=1732842193\u0026Signature=ctfK8wfNSzBVD7hB2VqGNNo5xScoBVSO9sCRxB3nTRYZWHlwt~--hYL2waOThEKlxzK3b77wCYyAgiauh-eBXeeLWUTstGJgtei28srBH97E-SCe9ru6ecQZCJNraXSwW47sYz5e7MUbwnI1OpkZcqHFBG-CCwOE8nlsGkIHJB5jPKgq4P5ZOYSQyWc8hwhkznoyWvuPv6c~Ur6fVSYVjWzvjXJlclxpsBYWd0888F4ZaM3Lk-s0X7owHcRuYu2LAJdk7ugBara17JE7WLrCAHdYtkzdWfS7KFRCIbsdOzxfJki~Fu7kaQSM2coXMBNSZkO-coSZ46GUYGGd6B4XyA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"A_unique_Mo_deposit_associated_with_carbonatites_in_the_Qinling_orogenic_belt_central_China","translated_slug":"","page_count":11,"language":"en","content_type":"Work","owner":{"id":4244633,"first_name":"Wenlei","middle_initials":null,"last_name":"Song","page_name":"WenleiSong","domain_name":"pku","created_at":"2013-05-19T21:50:46.125-07:00","display_name":"Wenlei Song","url":"https://pku.academia.edu/WenleiSong"},"attachments":[{"id":50227264,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/50227264/thumbnails/1.jpg","file_name":"j.lithos.2010.03.01320161110-30224-xnk97b.pdf","download_url":"https://www.academia.edu/attachments/50227264/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"A_unique_Mo_deposit_associated_with_carb.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/50227264/j.lithos.2010.03.01320161110-30224-xnk97b-libre.pdf?1478773673=\u0026response-content-disposition=attachment%3B+filename%3DA_unique_Mo_deposit_associated_with_carb.pdf\u0026Expires=1732842193\u0026Signature=ctfK8wfNSzBVD7hB2VqGNNo5xScoBVSO9sCRxB3nTRYZWHlwt~--hYL2waOThEKlxzK3b77wCYyAgiauh-eBXeeLWUTstGJgtei28srBH97E-SCe9ru6ecQZCJNraXSwW47sYz5e7MUbwnI1OpkZcqHFBG-CCwOE8nlsGkIHJB5jPKgq4P5ZOYSQyWc8hwhkznoyWvuPv6c~Ur6fVSYVjWzvjXJlclxpsBYWd0888F4ZaM3Lk-s0X7owHcRuYu2LAJdk7ugBara17JE7WLrCAHdYtkzdWfS7KFRCIbsdOzxfJki~Fu7kaQSM2coXMBNSZkO-coSZ46GUYGGd6B4XyA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":403211,"name":"Ore Geochmistry","url":"https://www.academia.edu/Documents/in/Ore_Geochmistry"}],"urls":[{"id":1156392,"url":"http://www.sciencedirect.com/science/article/pii/S0024493710000885"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="3565676"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/3565676/The_origin_of_enriched_mantle_beneath_North_China_block_Evidence_from_young_carbonatites"><img alt="Research paper thumbnail of The origin of enriched mantle beneath North China block: Evidence from young carbonatites" class="work-thumbnail" src="https://attachments.academia-assets.com/50227255/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/3565676/The_origin_of_enriched_mantle_beneath_North_China_block_Evidence_from_young_carbonatites">The origin of enriched mantle beneath North China block: Evidence from young carbonatites</a></div><div class="wp-workCard_item"><span>Lithos</span><span>, 2011</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin of the North China block (NCB) at Lesser Qinling, discontinuously extending for about 10 km. The carbonatites are volumetrically minor, and their formation is related to collision between the South China block (SCB) and Qinling orogen, which led to the amalgamation of the NCB and SCB. The carbonatites are intruded into different Archean and Mesoproterozoic wall-rocks, but are characterized by remarkably similar isotopic compositions [(87Sr/86Sr)i = 0.7048–0.7057; εNd = − 4.3 to − 10.1; 207Pb/206Pb = 0.878–0.889 and 208Pb/206Pb = 2.136–2.160], which approach, and trend toward slightly less radiogenic Sr and Nd values than, the enriched mantle component EM1. Proterozoic oceanic crust recycled through deep mantle is interpreted to be the principal source of carbon for the Lesser Qinling carbonatites. In comparison with most other young carbonatites (< 200 Ma) emplaced in a rift setting, the Lesser Qinling suite contains appreciably lower εNd and higher 207Pb/206Pb and 208Pb/206Pb values, which suggest the presence of an isotopically distinct additional component in its mantle source. The Pb isotopic signature of these carbonatites is significantly distinct from that of the Precambrian rocks in the North China block, but is similar to that of basement rocks in the South Qinling. On the basis of the available isotopic, geophysical and tectonic constraints, we suggest that the southern margin of the North China block was underthrust by crustal material derived from the South Qinling during their collision. The underthrusting contributed to thickening of the lower crust beneath the North China block and its conversion to dense eclogite. This process culminated in brittle delamination of the eclogitized material into the mantle and its metasomatic reworking by carbonate-rich melts derived from the EM1-type recycled Proterozoic crust. Carbonate metasomatism could produce an enriched sub-continental lithospheric source capable of yielding a variety of magma types.► Qinling orogenic belt is critical for unraveling the tectonic history of East Asia. ► Sr–Nd–Pb isotopes of carbonatite from northmost Qinling were studied. ► Lower crust of South Qinling was driven and subducted into North China block mantle. ► Carbonate metasomatism could produce an enriched sub-continental lithospheric source.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="4ed27e9ab25af5426f8aa423f05e4df7" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":50227255,"asset_id":3565676,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/50227255/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="3565676"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="3565676"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 3565676; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=3565676]").text(description); $(".js-view-count[data-work-id=3565676]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 3565676; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='3565676']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 3565676, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "4ed27e9ab25af5426f8aa423f05e4df7" } } $('.js-work-strip[data-work-id=3565676]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":3565676,"title":"The origin of enriched mantle beneath North China block: Evidence from young carbonatites","translated_title":"","metadata":{"abstract":"A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin of the North China block (NCB) at Lesser Qinling, discontinuously extending for about 10 km. The carbonatites are volumetrically minor, and their formation is related to collision between the South China block (SCB) and Qinling orogen, which led to the amalgamation of the NCB and SCB. The carbonatites are intruded into different Archean and Mesoproterozoic wall-rocks, but are characterized by remarkably similar isotopic compositions [(87Sr/86Sr)i = 0.7048–0.7057; εNd = − 4.3 to − 10.1; 207Pb/206Pb = 0.878–0.889 and 208Pb/206Pb = 2.136–2.160], which approach, and trend toward slightly less radiogenic Sr and Nd values than, the enriched mantle component EM1. Proterozoic oceanic crust recycled through deep mantle is interpreted to be the principal source of carbon for the Lesser Qinling carbonatites. In comparison with most other young carbonatites (\u003c 200 Ma) emplaced in a rift setting, the Lesser Qinling suite contains appreciably lower εNd and higher 207Pb/206Pb and 208Pb/206Pb values, which suggest the presence of an isotopically distinct additional component in its mantle source. The Pb isotopic signature of these carbonatites is significantly distinct from that of the Precambrian rocks in the North China block, but is similar to that of basement rocks in the South Qinling. On the basis of the available isotopic, geophysical and tectonic constraints, we suggest that the southern margin of the North China block was underthrust by crustal material derived from the South Qinling during their collision. The underthrusting contributed to thickening of the lower crust beneath the North China block and its conversion to dense eclogite. This process culminated in brittle delamination of the eclogitized material into the mantle and its metasomatic reworking by carbonate-rich melts derived from the EM1-type recycled Proterozoic crust. Carbonate metasomatism could produce an enriched sub-continental lithospheric source capable of yielding a variety of magma types.► Qinling orogenic belt is critical for unraveling the tectonic history of East Asia. ► Sr–Nd–Pb isotopes of carbonatite from northmost Qinling were studied. ► Lower crust of South Qinling was driven and subducted into North China block mantle. ► Carbonate metasomatism could produce an enriched sub-continental lithospheric source.","publication_date":{"day":null,"month":null,"year":2011,"errors":{}},"publication_name":"Lithos"},"translated_abstract":"A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin of the North China block (NCB) at Lesser Qinling, discontinuously extending for about 10 km. The carbonatites are volumetrically minor, and their formation is related to collision between the South China block (SCB) and Qinling orogen, which led to the amalgamation of the NCB and SCB. The carbonatites are intruded into different Archean and Mesoproterozoic wall-rocks, but are characterized by remarkably similar isotopic compositions [(87Sr/86Sr)i = 0.7048–0.7057; εNd = − 4.3 to − 10.1; 207Pb/206Pb = 0.878–0.889 and 208Pb/206Pb = 2.136–2.160], which approach, and trend toward slightly less radiogenic Sr and Nd values than, the enriched mantle component EM1. Proterozoic oceanic crust recycled through deep mantle is interpreted to be the principal source of carbon for the Lesser Qinling carbonatites. In comparison with most other young carbonatites (\u003c 200 Ma) emplaced in a rift setting, the Lesser Qinling suite contains appreciably lower εNd and higher 207Pb/206Pb and 208Pb/206Pb values, which suggest the presence of an isotopically distinct additional component in its mantle source. The Pb isotopic signature of these carbonatites is significantly distinct from that of the Precambrian rocks in the North China block, but is similar to that of basement rocks in the South Qinling. On the basis of the available isotopic, geophysical and tectonic constraints, we suggest that the southern margin of the North China block was underthrust by crustal material derived from the South Qinling during their collision. The underthrusting contributed to thickening of the lower crust beneath the North China block and its conversion to dense eclogite. This process culminated in brittle delamination of the eclogitized material into the mantle and its metasomatic reworking by carbonate-rich melts derived from the EM1-type recycled Proterozoic crust. Carbonate metasomatism could produce an enriched sub-continental lithospheric source capable of yielding a variety of magma types.► Qinling orogenic belt is critical for unraveling the tectonic history of East Asia. ► Sr–Nd–Pb isotopes of carbonatite from northmost Qinling were studied. ► Lower crust of South Qinling was driven and subducted into North China block mantle. ► Carbonate metasomatism could produce an enriched sub-continental lithospheric source.","internal_url":"https://www.academia.edu/3565676/The_origin_of_enriched_mantle_beneath_North_China_block_Evidence_from_young_carbonatites","translated_internal_url":"","created_at":"2013-05-19T21:51:02.189-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":4244633,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":50227255,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/50227255/thumbnails/1.jpg","file_name":"j.lithos.2011.07.02120161110-15251-1kmpd0u.pdf","download_url":"https://www.academia.edu/attachments/50227255/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_origin_of_enriched_mantle_beneath_No.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/50227255/j.lithos.2011.07.02120161110-15251-1kmpd0u-libre.pdf?1478773677=\u0026response-content-disposition=attachment%3B+filename%3DThe_origin_of_enriched_mantle_beneath_No.pdf\u0026Expires=1732842193\u0026Signature=LUnKC8gBrk47fHJG3YC4ZugCtIGdTHr9O2TpFTUlk7SeaZg~fQnXpM07ZXMMCbe~05CFX3mwZtyzplYm1SXjDEZVb1ScosHe55geDEzlxBsuhu8~nbnkq4wWHie7zqoIs20jwR6V~wRKJluFcS97G0UTU4z6MEKi4A6xmPeTaxrdIV-NY0bsaiZMMFlb2u7pUQeZ-iXYk2wrW69VZmsNXVEh~uNTrBqf~eZUktAL--KWRG6gqfWR-M~VXhxlMV9UIoHzf0F107rChAvwt7BXF8wESy0y2OdoCPsg0-dTZxOzS1q~KZoJFa7OFWIkx7SWsNXcgbb0~aEfWN5IVXBfrA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"The_origin_of_enriched_mantle_beneath_North_China_block_Evidence_from_young_carbonatites","translated_slug":"","page_count":9,"language":"en","content_type":"Work","owner":{"id":4244633,"first_name":"Wenlei","middle_initials":null,"last_name":"Song","page_name":"WenleiSong","domain_name":"pku","created_at":"2013-05-19T21:50:46.125-07:00","display_name":"Wenlei Song","url":"https://pku.academia.edu/WenleiSong"},"attachments":[{"id":50227255,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/50227255/thumbnails/1.jpg","file_name":"j.lithos.2011.07.02120161110-15251-1kmpd0u.pdf","download_url":"https://www.academia.edu/attachments/50227255/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_origin_of_enriched_mantle_beneath_No.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/50227255/j.lithos.2011.07.02120161110-15251-1kmpd0u-libre.pdf?1478773677=\u0026response-content-disposition=attachment%3B+filename%3DThe_origin_of_enriched_mantle_beneath_No.pdf\u0026Expires=1732842193\u0026Signature=LUnKC8gBrk47fHJG3YC4ZugCtIGdTHr9O2TpFTUlk7SeaZg~fQnXpM07ZXMMCbe~05CFX3mwZtyzplYm1SXjDEZVb1ScosHe55geDEzlxBsuhu8~nbnkq4wWHie7zqoIs20jwR6V~wRKJluFcS97G0UTU4z6MEKi4A6xmPeTaxrdIV-NY0bsaiZMMFlb2u7pUQeZ-iXYk2wrW69VZmsNXVEh~uNTrBqf~eZUktAL--KWRG6gqfWR-M~VXhxlMV9UIoHzf0F107rChAvwt7BXF8wESy0y2OdoCPsg0-dTZxOzS1q~KZoJFa7OFWIkx7SWsNXcgbb0~aEfWN5IVXBfrA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":403211,"name":"Ore Geochmistry","url":"https://www.academia.edu/Documents/in/Ore_Geochmistry"}],"urls":[{"id":1156391,"url":"http://www.sciencedirect.com/science/article/pii/S0024493711002167"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="3565675"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/3565675/Carbonatites_in_China_A_review_for_genesis_and_mineralization"><img alt="Research paper thumbnail of Carbonatites in China: A review for genesis and mineralization" class="work-thumbnail" src="https://attachments.academia-assets.com/50227254/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/3565675/Carbonatites_in_China_A_review_for_genesis_and_mineralization">Carbonatites in China: A review for genesis and mineralization</a></div><div class="wp-workCard_item"><span>Coordination Chemistry Reviews</span><span>, 2010</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Carbonatites are commonly related to the accumulation of economically valuable substances such as...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Carbonatites are commonly related to the accumulation of economically valuable substances such as REE, Cu, and P. The debate over the origin of carbonatites and their relationship to associated silicate rocks has been ongoing for about 45 years. Worldwide, the rocks characteristically display more geochemical enrichments in Ba, Sr and REE than sedimentary carbonate rocks. However, carbonatite’s geochemical features are disputed because of secondary mineral effects. Rock-forming carbonates from carbonatites at Qinling, Panxi region, and Bayan Obo in China show REE distribution patterns ranging from LREE enrichment to flat patterns. They are characterized by a Sr content more than 10 times higher than that of secondary carbonates. The coarse- and fine-grained dolomites from Bayan Obo H8 dolomite marbles also show similar high Sr abundance, indicating that they are of igneous origin. Some carbonates in Chinese carbonatites show REE (especially HREE) contents and distribution patterns similar to those of the whole rocks. These intrusive carbonatites display lower platinum group elements and stronger fractionation between Pt and Ir relative to high-Si extrusive carbonatite. This indicates that most intrusive carbonatites may be carbonate cumulates. Maoniuping and Daluxiang in Panxi region are large REE deposits. Hydrothermal fluorite ore veins occur outside of the carbonatite bodies and are emplaced in wallrock syenite. The fluorite in Maoniuping has Sr and Nd isotopes similar to carbonatite. The Daluxiang fluorite shows Sr and REE compositions different from those in Maoniuping. The difference is reflected by both the carbonatites and rock-forming carbonates, indicating that REE mineralization is related to carbonatites. The cumulate processes of carbonate minerals make fractionated fluids rich in volatiles and LREE as a result of low partition coefficients for REE between carbonate and carbonatite melt and an increase from LREE to HREE. The carbonatite-derived fluid has interacted with wallrock to form REE ore veins. The amount of carbonatite dykes occurring near the Bayan Obo orebodies may support the same mineralization model, i.e. that fluids evolved from the carbonatite dykes reacted with H8 dolomite marble, and thus the different REE and isotope compositions of coarse- and fine-grained dolomite may be related to reaction processes.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="10dc7e60ac46cfc3277861f759c9c88c" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":50227254,"asset_id":3565675,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/50227254/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="3565675"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="3565675"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 3565675; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=3565675]").text(description); $(".js-view-count[data-work-id=3565675]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 3565675; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='3565675']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 3565675, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "10dc7e60ac46cfc3277861f759c9c88c" } } $('.js-work-strip[data-work-id=3565675]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":3565675,"title":"Carbonatites in China: A review for genesis and mineralization","translated_title":"","metadata":{"abstract":"Carbonatites are commonly related to the accumulation of economically valuable substances such as REE, Cu, and P. The debate over the origin of carbonatites and their relationship to associated silicate rocks has been ongoing for about 45 years. Worldwide, the rocks characteristically display more geochemical enrichments in Ba, Sr and REE than sedimentary carbonate rocks. However, carbonatite’s geochemical features are disputed because of secondary mineral effects. Rock-forming carbonates from carbonatites at Qinling, Panxi region, and Bayan Obo in China show REE distribution patterns ranging from LREE enrichment to flat patterns. They are characterized by a Sr content more than 10 times higher than that of secondary carbonates. The coarse- and fine-grained dolomites from Bayan Obo H8 dolomite marbles also show similar high Sr abundance, indicating that they are of igneous origin. Some carbonates in Chinese carbonatites show REE (especially HREE) contents and distribution patterns similar to those of the whole rocks. These intrusive carbonatites display lower platinum group elements and stronger fractionation between Pt and Ir relative to high-Si extrusive carbonatite. This indicates that most intrusive carbonatites may be carbonate cumulates. Maoniuping and Daluxiang in Panxi region are large REE deposits. Hydrothermal fluorite ore veins occur outside of the carbonatite bodies and are emplaced in wallrock syenite. The fluorite in Maoniuping has Sr and Nd isotopes similar to carbonatite. The Daluxiang fluorite shows Sr and REE compositions different from those in Maoniuping. The difference is reflected by both the carbonatites and rock-forming carbonates, indicating that REE mineralization is related to carbonatites. The cumulate processes of carbonate minerals make fractionated fluids rich in volatiles and LREE as a result of low partition coefficients for REE between carbonate and carbonatite melt and an increase from LREE to HREE. The carbonatite-derived fluid has interacted with wallrock to form REE ore veins. The amount of carbonatite dykes occurring near the Bayan Obo orebodies may support the same mineralization model, i.e. that fluids evolved from the carbonatite dykes reacted with H8 dolomite marble, and thus the different REE and isotope compositions of coarse- and fine-grained dolomite may be related to reaction processes.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Coordination Chemistry Reviews"},"translated_abstract":"Carbonatites are commonly related to the accumulation of economically valuable substances such as REE, Cu, and P. The debate over the origin of carbonatites and their relationship to associated silicate rocks has been ongoing for about 45 years. Worldwide, the rocks characteristically display more geochemical enrichments in Ba, Sr and REE than sedimentary carbonate rocks. However, carbonatite’s geochemical features are disputed because of secondary mineral effects. Rock-forming carbonates from carbonatites at Qinling, Panxi region, and Bayan Obo in China show REE distribution patterns ranging from LREE enrichment to flat patterns. They are characterized by a Sr content more than 10 times higher than that of secondary carbonates. The coarse- and fine-grained dolomites from Bayan Obo H8 dolomite marbles also show similar high Sr abundance, indicating that they are of igneous origin. Some carbonates in Chinese carbonatites show REE (especially HREE) contents and distribution patterns similar to those of the whole rocks. These intrusive carbonatites display lower platinum group elements and stronger fractionation between Pt and Ir relative to high-Si extrusive carbonatite. This indicates that most intrusive carbonatites may be carbonate cumulates. Maoniuping and Daluxiang in Panxi region are large REE deposits. Hydrothermal fluorite ore veins occur outside of the carbonatite bodies and are emplaced in wallrock syenite. The fluorite in Maoniuping has Sr and Nd isotopes similar to carbonatite. The Daluxiang fluorite shows Sr and REE compositions different from those in Maoniuping. The difference is reflected by both the carbonatites and rock-forming carbonates, indicating that REE mineralization is related to carbonatites. The cumulate processes of carbonate minerals make fractionated fluids rich in volatiles and LREE as a result of low partition coefficients for REE between carbonate and carbonatite melt and an increase from LREE to HREE. The carbonatite-derived fluid has interacted with wallrock to form REE ore veins. The amount of carbonatite dykes occurring near the Bayan Obo orebodies may support the same mineralization model, i.e. that fluids evolved from the carbonatite dykes reacted with H8 dolomite marble, and thus the different REE and isotope compositions of coarse- and fine-grained dolomite may be related to reaction processes.","internal_url":"https://www.academia.edu/3565675/Carbonatites_in_China_A_review_for_genesis_and_mineralization","translated_internal_url":"","created_at":"2013-05-19T21:50:59.667-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":4244633,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":50227254,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/50227254/thumbnails/1.jpg","file_name":"j.gsf.2010.09.00120161110-14403-ofhxoe.pdf","download_url":"https://www.academia.edu/attachments/50227254/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Carbonatites_in_China_A_review_for_genes.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/50227254/j.gsf.2010.09.00120161110-14403-ofhxoe-libre.pdf?1478773675=\u0026response-content-disposition=attachment%3B+filename%3DCarbonatites_in_China_A_review_for_genes.pdf\u0026Expires=1732842193\u0026Signature=DvfBK8vxzw-FtH1NLtN67Pb4DsNnNlxVdHvbvaNJ7~VRdEPzooZYYqzCm5TpOlb20g6akHj1Xa2Jy1IYRZcVWYkP~KlVjq1286VZgBq~znCmwH110cBJyFBcRxt4CkxTyccYdITtOkb-~A5oO~kGCIF~C55expA0WDS8uiFwKwqXbcj7PoluDXHO2tmZHBtOknDKN0TmF6B23t8fo5NcsYcH08clf3hBAGSFnRTW~YsHWIkewXMI23e8bj~DR9a9QP0QbwQdEB0QVq0pozB9mIunEocfsC7jSbucDUCwAO03k3QSit4xDOsCXrB1OTTpSMPeZ2UmhT18U-yfv-3Yvg__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Carbonatites_in_China_A_review_for_genesis_and_mineralization","translated_slug":"","page_count":10,"language":"en","content_type":"Work","owner":{"id":4244633,"first_name":"Wenlei","middle_initials":null,"last_name":"Song","page_name":"WenleiSong","domain_name":"pku","created_at":"2013-05-19T21:50:46.125-07:00","display_name":"Wenlei Song","url":"https://pku.academia.edu/WenleiSong"},"attachments":[{"id":50227254,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/50227254/thumbnails/1.jpg","file_name":"j.gsf.2010.09.00120161110-14403-ofhxoe.pdf","download_url":"https://www.academia.edu/attachments/50227254/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Carbonatites_in_China_A_review_for_genes.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/50227254/j.gsf.2010.09.00120161110-14403-ofhxoe-libre.pdf?1478773675=\u0026response-content-disposition=attachment%3B+filename%3DCarbonatites_in_China_A_review_for_genes.pdf\u0026Expires=1732842193\u0026Signature=DvfBK8vxzw-FtH1NLtN67Pb4DsNnNlxVdHvbvaNJ7~VRdEPzooZYYqzCm5TpOlb20g6akHj1Xa2Jy1IYRZcVWYkP~KlVjq1286VZgBq~znCmwH110cBJyFBcRxt4CkxTyccYdITtOkb-~A5oO~kGCIF~C55expA0WDS8uiFwKwqXbcj7PoluDXHO2tmZHBtOknDKN0TmF6B23t8fo5NcsYcH08clf3hBAGSFnRTW~YsHWIkewXMI23e8bj~DR9a9QP0QbwQdEB0QVq0pozB9mIunEocfsC7jSbucDUCwAO03k3QSit4xDOsCXrB1OTTpSMPeZ2UmhT18U-yfv-3Yvg__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":403211,"name":"Ore Geochmistry","url":"https://www.academia.edu/Documents/in/Ore_Geochmistry"}],"urls":[{"id":1156390,"url":"http://www.sciencedirect.com/science/article/pii/S1674987110000125"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> </div><div class="profile--tab_content_container js-tab-pane tab-pane" data-section-id="531711" id="papers"><div class="js-work-strip profile--work_container" data-work-id="3565677"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/3565677/A_unique_Mo_deposit_associated_with_carbonatites_in_the_Qinling_orogenic_belt_central_China"><img alt="Research paper thumbnail of A unique Mo deposit associated with carbonatites in the Qinling orogenic belt, central China" class="work-thumbnail" src="https://attachments.academia-assets.com/50227264/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/3565677/A_unique_Mo_deposit_associated_with_carbonatites_in_the_Qinling_orogenic_belt_central_China">A unique Mo deposit associated with carbonatites in the Qinling orogenic belt, central China</a></div><div class="wp-workCard_item"><span>Lithos</span><span>, 2010</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The Qinling molybdenum belt is a prominent metallogenic structure in central China hosting severa...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The Qinling molybdenum belt is a prominent metallogenic structure in central China hosting several significant porphyry- and porphyry–skarn-type deposits. The Huanglongpu Mo deposit in the north-western part of the belt is unique in that it is associated with carbonatite dykes, rather than felsic magmatism. The carbonatites are composed largely of Sr–Mn-rich calcite and characterized by high concentrations of Sr and rare-earth elements (REE), and stable-isotope values indicative of a mantle source (δ13CPDB = − 6.7 ± 0.2‰ and δ18OSMOW = 8.2 ± 1.0‰). Molybdenite is associated with galena and REE minerals (parisite, bastnäsite and monazite). Both molybdenite and galena are characterized by high Re contents (up to 0.4 and 0.2 wt.%, respectively) and Re/(Mo, Pb) ratios approaching the primitive-mantle values. In contrast to the rock-forming calcite, the REE minerals are enriched in light REE, whose relative proportion increases from parisite-(Ce) [average (La/Nd)n = 2.1] to bastnäsite-(Ce) and monazite-(Ce) [average (La/Nd)n = 3.1, 4.6, respectively]. The whole-rock compositions are characterized by some of the highest Mo and heavy REE abundances reported for carbonatites to date: up to 1010 ppm Mo, 1130 ppm Y + Gd…Lu and (La/Yb)n = 1.2–2.7. The unusual trace-element geochemistry of the Huanglongpu rocks may ultimately reflect the composition of their mantle source, but their enrichment in Mo + Re was undoubtedly enhanced through preferential partitioning of these elements into a light REE–Pb–S-rich fluid derived from the carbonatitic magma modified by calcite fractionation. The present work shows that Mo can be retained, transported and deposited by carbonatitic fluids capable of generating economic Mo deposits.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5d182c9f97351b0cc573f324e524020e" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":50227264,"asset_id":3565677,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/50227264/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="3565677"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="3565677"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 3565677; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=3565677]").text(description); $(".js-view-count[data-work-id=3565677]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 3565677; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='3565677']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 3565677, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "5d182c9f97351b0cc573f324e524020e" } } $('.js-work-strip[data-work-id=3565677]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":3565677,"title":"A unique Mo deposit associated with carbonatites in the Qinling orogenic belt, central China","translated_title":"","metadata":{"abstract":"The Qinling molybdenum belt is a prominent metallogenic structure in central China hosting several significant porphyry- and porphyry–skarn-type deposits. The Huanglongpu Mo deposit in the north-western part of the belt is unique in that it is associated with carbonatite dykes, rather than felsic magmatism. The carbonatites are composed largely of Sr–Mn-rich calcite and characterized by high concentrations of Sr and rare-earth elements (REE), and stable-isotope values indicative of a mantle source (δ13CPDB = − 6.7 ± 0.2‰ and δ18OSMOW = 8.2 ± 1.0‰). Molybdenite is associated with galena and REE minerals (parisite, bastnäsite and monazite). Both molybdenite and galena are characterized by high Re contents (up to 0.4 and 0.2 wt.%, respectively) and Re/(Mo, Pb) ratios approaching the primitive-mantle values. In contrast to the rock-forming calcite, the REE minerals are enriched in light REE, whose relative proportion increases from parisite-(Ce) [average (La/Nd)n = 2.1] to bastnäsite-(Ce) and monazite-(Ce) [average (La/Nd)n = 3.1, 4.6, respectively]. The whole-rock compositions are characterized by some of the highest Mo and heavy REE abundances reported for carbonatites to date: up to 1010 ppm Mo, 1130 ppm Y + Gd…Lu and (La/Yb)n = 1.2–2.7. The unusual trace-element geochemistry of the Huanglongpu rocks may ultimately reflect the composition of their mantle source, but their enrichment in Mo + Re was undoubtedly enhanced through preferential partitioning of these elements into a light REE–Pb–S-rich fluid derived from the carbonatitic magma modified by calcite fractionation. The present work shows that Mo can be retained, transported and deposited by carbonatitic fluids capable of generating economic Mo deposits.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Lithos"},"translated_abstract":"The Qinling molybdenum belt is a prominent metallogenic structure in central China hosting several significant porphyry- and porphyry–skarn-type deposits. The Huanglongpu Mo deposit in the north-western part of the belt is unique in that it is associated with carbonatite dykes, rather than felsic magmatism. The carbonatites are composed largely of Sr–Mn-rich calcite and characterized by high concentrations of Sr and rare-earth elements (REE), and stable-isotope values indicative of a mantle source (δ13CPDB = − 6.7 ± 0.2‰ and δ18OSMOW = 8.2 ± 1.0‰). Molybdenite is associated with galena and REE minerals (parisite, bastnäsite and monazite). Both molybdenite and galena are characterized by high Re contents (up to 0.4 and 0.2 wt.%, respectively) and Re/(Mo, Pb) ratios approaching the primitive-mantle values. In contrast to the rock-forming calcite, the REE minerals are enriched in light REE, whose relative proportion increases from parisite-(Ce) [average (La/Nd)n = 2.1] to bastnäsite-(Ce) and monazite-(Ce) [average (La/Nd)n = 3.1, 4.6, respectively]. The whole-rock compositions are characterized by some of the highest Mo and heavy REE abundances reported for carbonatites to date: up to 1010 ppm Mo, 1130 ppm Y + Gd…Lu and (La/Yb)n = 1.2–2.7. The unusual trace-element geochemistry of the Huanglongpu rocks may ultimately reflect the composition of their mantle source, but their enrichment in Mo + Re was undoubtedly enhanced through preferential partitioning of these elements into a light REE–Pb–S-rich fluid derived from the carbonatitic magma modified by calcite fractionation. The present work shows that Mo can be retained, transported and deposited by carbonatitic fluids capable of generating economic Mo deposits.","internal_url":"https://www.academia.edu/3565677/A_unique_Mo_deposit_associated_with_carbonatites_in_the_Qinling_orogenic_belt_central_China","translated_internal_url":"","created_at":"2013-05-19T21:51:03.802-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":4244633,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":50227264,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/50227264/thumbnails/1.jpg","file_name":"j.lithos.2010.03.01320161110-30224-xnk97b.pdf","download_url":"https://www.academia.edu/attachments/50227264/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"A_unique_Mo_deposit_associated_with_carb.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/50227264/j.lithos.2010.03.01320161110-30224-xnk97b-libre.pdf?1478773673=\u0026response-content-disposition=attachment%3B+filename%3DA_unique_Mo_deposit_associated_with_carb.pdf\u0026Expires=1732842193\u0026Signature=ctfK8wfNSzBVD7hB2VqGNNo5xScoBVSO9sCRxB3nTRYZWHlwt~--hYL2waOThEKlxzK3b77wCYyAgiauh-eBXeeLWUTstGJgtei28srBH97E-SCe9ru6ecQZCJNraXSwW47sYz5e7MUbwnI1OpkZcqHFBG-CCwOE8nlsGkIHJB5jPKgq4P5ZOYSQyWc8hwhkznoyWvuPv6c~Ur6fVSYVjWzvjXJlclxpsBYWd0888F4ZaM3Lk-s0X7owHcRuYu2LAJdk7ugBara17JE7WLrCAHdYtkzdWfS7KFRCIbsdOzxfJki~Fu7kaQSM2coXMBNSZkO-coSZ46GUYGGd6B4XyA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"A_unique_Mo_deposit_associated_with_carbonatites_in_the_Qinling_orogenic_belt_central_China","translated_slug":"","page_count":11,"language":"en","content_type":"Work","owner":{"id":4244633,"first_name":"Wenlei","middle_initials":null,"last_name":"Song","page_name":"WenleiSong","domain_name":"pku","created_at":"2013-05-19T21:50:46.125-07:00","display_name":"Wenlei Song","url":"https://pku.academia.edu/WenleiSong"},"attachments":[{"id":50227264,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/50227264/thumbnails/1.jpg","file_name":"j.lithos.2010.03.01320161110-30224-xnk97b.pdf","download_url":"https://www.academia.edu/attachments/50227264/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"A_unique_Mo_deposit_associated_with_carb.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/50227264/j.lithos.2010.03.01320161110-30224-xnk97b-libre.pdf?1478773673=\u0026response-content-disposition=attachment%3B+filename%3DA_unique_Mo_deposit_associated_with_carb.pdf\u0026Expires=1732842193\u0026Signature=ctfK8wfNSzBVD7hB2VqGNNo5xScoBVSO9sCRxB3nTRYZWHlwt~--hYL2waOThEKlxzK3b77wCYyAgiauh-eBXeeLWUTstGJgtei28srBH97E-SCe9ru6ecQZCJNraXSwW47sYz5e7MUbwnI1OpkZcqHFBG-CCwOE8nlsGkIHJB5jPKgq4P5ZOYSQyWc8hwhkznoyWvuPv6c~Ur6fVSYVjWzvjXJlclxpsBYWd0888F4ZaM3Lk-s0X7owHcRuYu2LAJdk7ugBara17JE7WLrCAHdYtkzdWfS7KFRCIbsdOzxfJki~Fu7kaQSM2coXMBNSZkO-coSZ46GUYGGd6B4XyA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":403211,"name":"Ore Geochmistry","url":"https://www.academia.edu/Documents/in/Ore_Geochmistry"}],"urls":[{"id":1156392,"url":"http://www.sciencedirect.com/science/article/pii/S0024493710000885"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="3565676"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/3565676/The_origin_of_enriched_mantle_beneath_North_China_block_Evidence_from_young_carbonatites"><img alt="Research paper thumbnail of The origin of enriched mantle beneath North China block: Evidence from young carbonatites" class="work-thumbnail" src="https://attachments.academia-assets.com/50227255/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/3565676/The_origin_of_enriched_mantle_beneath_North_China_block_Evidence_from_young_carbonatites">The origin of enriched mantle beneath North China block: Evidence from young carbonatites</a></div><div class="wp-workCard_item"><span>Lithos</span><span>, 2011</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin of the North China block (NCB) at Lesser Qinling, discontinuously extending for about 10 km. The carbonatites are volumetrically minor, and their formation is related to collision between the South China block (SCB) and Qinling orogen, which led to the amalgamation of the NCB and SCB. The carbonatites are intruded into different Archean and Mesoproterozoic wall-rocks, but are characterized by remarkably similar isotopic compositions [(87Sr/86Sr)i = 0.7048–0.7057; εNd = − 4.3 to − 10.1; 207Pb/206Pb = 0.878–0.889 and 208Pb/206Pb = 2.136–2.160], which approach, and trend toward slightly less radiogenic Sr and Nd values than, the enriched mantle component EM1. Proterozoic oceanic crust recycled through deep mantle is interpreted to be the principal source of carbon for the Lesser Qinling carbonatites. In comparison with most other young carbonatites (< 200 Ma) emplaced in a rift setting, the Lesser Qinling suite contains appreciably lower εNd and higher 207Pb/206Pb and 208Pb/206Pb values, which suggest the presence of an isotopically distinct additional component in its mantle source. The Pb isotopic signature of these carbonatites is significantly distinct from that of the Precambrian rocks in the North China block, but is similar to that of basement rocks in the South Qinling. On the basis of the available isotopic, geophysical and tectonic constraints, we suggest that the southern margin of the North China block was underthrust by crustal material derived from the South Qinling during their collision. The underthrusting contributed to thickening of the lower crust beneath the North China block and its conversion to dense eclogite. This process culminated in brittle delamination of the eclogitized material into the mantle and its metasomatic reworking by carbonate-rich melts derived from the EM1-type recycled Proterozoic crust. Carbonate metasomatism could produce an enriched sub-continental lithospheric source capable of yielding a variety of magma types.► Qinling orogenic belt is critical for unraveling the tectonic history of East Asia. ► Sr–Nd–Pb isotopes of carbonatite from northmost Qinling were studied. ► Lower crust of South Qinling was driven and subducted into North China block mantle. ► Carbonate metasomatism could produce an enriched sub-continental lithospheric source.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="4ed27e9ab25af5426f8aa423f05e4df7" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":50227255,"asset_id":3565676,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/50227255/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="3565676"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="3565676"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 3565676; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=3565676]").text(description); $(".js-view-count[data-work-id=3565676]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 3565676; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='3565676']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 3565676, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "4ed27e9ab25af5426f8aa423f05e4df7" } } $('.js-work-strip[data-work-id=3565676]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":3565676,"title":"The origin of enriched mantle beneath North China block: Evidence from young carbonatites","translated_title":"","metadata":{"abstract":"A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin of the North China block (NCB) at Lesser Qinling, discontinuously extending for about 10 km. The carbonatites are volumetrically minor, and their formation is related to collision between the South China block (SCB) and Qinling orogen, which led to the amalgamation of the NCB and SCB. The carbonatites are intruded into different Archean and Mesoproterozoic wall-rocks, but are characterized by remarkably similar isotopic compositions [(87Sr/86Sr)i = 0.7048–0.7057; εNd = − 4.3 to − 10.1; 207Pb/206Pb = 0.878–0.889 and 208Pb/206Pb = 2.136–2.160], which approach, and trend toward slightly less radiogenic Sr and Nd values than, the enriched mantle component EM1. Proterozoic oceanic crust recycled through deep mantle is interpreted to be the principal source of carbon for the Lesser Qinling carbonatites. In comparison with most other young carbonatites (\u003c 200 Ma) emplaced in a rift setting, the Lesser Qinling suite contains appreciably lower εNd and higher 207Pb/206Pb and 208Pb/206Pb values, which suggest the presence of an isotopically distinct additional component in its mantle source. The Pb isotopic signature of these carbonatites is significantly distinct from that of the Precambrian rocks in the North China block, but is similar to that of basement rocks in the South Qinling. On the basis of the available isotopic, geophysical and tectonic constraints, we suggest that the southern margin of the North China block was underthrust by crustal material derived from the South Qinling during their collision. The underthrusting contributed to thickening of the lower crust beneath the North China block and its conversion to dense eclogite. This process culminated in brittle delamination of the eclogitized material into the mantle and its metasomatic reworking by carbonate-rich melts derived from the EM1-type recycled Proterozoic crust. Carbonate metasomatism could produce an enriched sub-continental lithospheric source capable of yielding a variety of magma types.► Qinling orogenic belt is critical for unraveling the tectonic history of East Asia. ► Sr–Nd–Pb isotopes of carbonatite from northmost Qinling were studied. ► Lower crust of South Qinling was driven and subducted into North China block mantle. ► Carbonate metasomatism could produce an enriched sub-continental lithospheric source.","publication_date":{"day":null,"month":null,"year":2011,"errors":{}},"publication_name":"Lithos"},"translated_abstract":"A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin of the North China block (NCB) at Lesser Qinling, discontinuously extending for about 10 km. The carbonatites are volumetrically minor, and their formation is related to collision between the South China block (SCB) and Qinling orogen, which led to the amalgamation of the NCB and SCB. The carbonatites are intruded into different Archean and Mesoproterozoic wall-rocks, but are characterized by remarkably similar isotopic compositions [(87Sr/86Sr)i = 0.7048–0.7057; εNd = − 4.3 to − 10.1; 207Pb/206Pb = 0.878–0.889 and 208Pb/206Pb = 2.136–2.160], which approach, and trend toward slightly less radiogenic Sr and Nd values than, the enriched mantle component EM1. Proterozoic oceanic crust recycled through deep mantle is interpreted to be the principal source of carbon for the Lesser Qinling carbonatites. In comparison with most other young carbonatites (\u003c 200 Ma) emplaced in a rift setting, the Lesser Qinling suite contains appreciably lower εNd and higher 207Pb/206Pb and 208Pb/206Pb values, which suggest the presence of an isotopically distinct additional component in its mantle source. The Pb isotopic signature of these carbonatites is significantly distinct from that of the Precambrian rocks in the North China block, but is similar to that of basement rocks in the South Qinling. On the basis of the available isotopic, geophysical and tectonic constraints, we suggest that the southern margin of the North China block was underthrust by crustal material derived from the South Qinling during their collision. The underthrusting contributed to thickening of the lower crust beneath the North China block and its conversion to dense eclogite. This process culminated in brittle delamination of the eclogitized material into the mantle and its metasomatic reworking by carbonate-rich melts derived from the EM1-type recycled Proterozoic crust. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="3565675"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/3565675/Carbonatites_in_China_A_review_for_genesis_and_mineralization"><img alt="Research paper thumbnail of Carbonatites in China: A review for genesis and mineralization" class="work-thumbnail" src="https://attachments.academia-assets.com/50227254/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/3565675/Carbonatites_in_China_A_review_for_genesis_and_mineralization">Carbonatites in China: A review for genesis and mineralization</a></div><div class="wp-workCard_item"><span>Coordination Chemistry Reviews</span><span>, 2010</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Carbonatites are commonly related to the accumulation of economically valuable substances such as...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Carbonatites are commonly related to the accumulation of economically valuable substances such as REE, Cu, and P. The debate over the origin of carbonatites and their relationship to associated silicate rocks has been ongoing for about 45 years. Worldwide, the rocks characteristically display more geochemical enrichments in Ba, Sr and REE than sedimentary carbonate rocks. However, carbonatite’s geochemical features are disputed because of secondary mineral effects. Rock-forming carbonates from carbonatites at Qinling, Panxi region, and Bayan Obo in China show REE distribution patterns ranging from LREE enrichment to flat patterns. They are characterized by a Sr content more than 10 times higher than that of secondary carbonates. The coarse- and fine-grained dolomites from Bayan Obo H8 dolomite marbles also show similar high Sr abundance, indicating that they are of igneous origin. Some carbonates in Chinese carbonatites show REE (especially HREE) contents and distribution patterns similar to those of the whole rocks. These intrusive carbonatites display lower platinum group elements and stronger fractionation between Pt and Ir relative to high-Si extrusive carbonatite. This indicates that most intrusive carbonatites may be carbonate cumulates. Maoniuping and Daluxiang in Panxi region are large REE deposits. Hydrothermal fluorite ore veins occur outside of the carbonatite bodies and are emplaced in wallrock syenite. The fluorite in Maoniuping has Sr and Nd isotopes similar to carbonatite. The Daluxiang fluorite shows Sr and REE compositions different from those in Maoniuping. The difference is reflected by both the carbonatites and rock-forming carbonates, indicating that REE mineralization is related to carbonatites. The cumulate processes of carbonate minerals make fractionated fluids rich in volatiles and LREE as a result of low partition coefficients for REE between carbonate and carbonatite melt and an increase from LREE to HREE. The carbonatite-derived fluid has interacted with wallrock to form REE ore veins. The amount of carbonatite dykes occurring near the Bayan Obo orebodies may support the same mineralization model, i.e. that fluids evolved from the carbonatite dykes reacted with H8 dolomite marble, and thus the different REE and isotope compositions of coarse- and fine-grained dolomite may be related to reaction processes.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="10dc7e60ac46cfc3277861f759c9c88c" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":50227254,"asset_id":3565675,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/50227254/download_file?st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&st=MTczMjgzODU5Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="3565675"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="3565675"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 3565675; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=3565675]").text(description); $(".js-view-count[data-work-id=3565675]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 3565675; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='3565675']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 3565675, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "10dc7e60ac46cfc3277861f759c9c88c" } } $('.js-work-strip[data-work-id=3565675]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":3565675,"title":"Carbonatites in China: A review for genesis and mineralization","translated_title":"","metadata":{"abstract":"Carbonatites are commonly related to the accumulation of economically valuable substances such as REE, Cu, and P. The debate over the origin of carbonatites and their relationship to associated silicate rocks has been ongoing for about 45 years. Worldwide, the rocks characteristically display more geochemical enrichments in Ba, Sr and REE than sedimentary carbonate rocks. However, carbonatite’s geochemical features are disputed because of secondary mineral effects. Rock-forming carbonates from carbonatites at Qinling, Panxi region, and Bayan Obo in China show REE distribution patterns ranging from LREE enrichment to flat patterns. They are characterized by a Sr content more than 10 times higher than that of secondary carbonates. The coarse- and fine-grained dolomites from Bayan Obo H8 dolomite marbles also show similar high Sr abundance, indicating that they are of igneous origin. Some carbonates in Chinese carbonatites show REE (especially HREE) contents and distribution patterns similar to those of the whole rocks. These intrusive carbonatites display lower platinum group elements and stronger fractionation between Pt and Ir relative to high-Si extrusive carbonatite. This indicates that most intrusive carbonatites may be carbonate cumulates. Maoniuping and Daluxiang in Panxi region are large REE deposits. Hydrothermal fluorite ore veins occur outside of the carbonatite bodies and are emplaced in wallrock syenite. The fluorite in Maoniuping has Sr and Nd isotopes similar to carbonatite. The Daluxiang fluorite shows Sr and REE compositions different from those in Maoniuping. The difference is reflected by both the carbonatites and rock-forming carbonates, indicating that REE mineralization is related to carbonatites. The cumulate processes of carbonate minerals make fractionated fluids rich in volatiles and LREE as a result of low partition coefficients for REE between carbonate and carbonatite melt and an increase from LREE to HREE. The carbonatite-derived fluid has interacted with wallrock to form REE ore veins. The amount of carbonatite dykes occurring near the Bayan Obo orebodies may support the same mineralization model, i.e. that fluids evolved from the carbonatite dykes reacted with H8 dolomite marble, and thus the different REE and isotope compositions of coarse- and fine-grained dolomite may be related to reaction processes.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Coordination Chemistry Reviews"},"translated_abstract":"Carbonatites are commonly related to the accumulation of economically valuable substances such as REE, Cu, and P. The debate over the origin of carbonatites and their relationship to associated silicate rocks has been ongoing for about 45 years. Worldwide, the rocks characteristically display more geochemical enrichments in Ba, Sr and REE than sedimentary carbonate rocks. However, carbonatite’s geochemical features are disputed because of secondary mineral effects. Rock-forming carbonates from carbonatites at Qinling, Panxi region, and Bayan Obo in China show REE distribution patterns ranging from LREE enrichment to flat patterns. They are characterized by a Sr content more than 10 times higher than that of secondary carbonates. The coarse- and fine-grained dolomites from Bayan Obo H8 dolomite marbles also show similar high Sr abundance, indicating that they are of igneous origin. Some carbonates in Chinese carbonatites show REE (especially HREE) contents and distribution patterns similar to those of the whole rocks. These intrusive carbonatites display lower platinum group elements and stronger fractionation between Pt and Ir relative to high-Si extrusive carbonatite. This indicates that most intrusive carbonatites may be carbonate cumulates. Maoniuping and Daluxiang in Panxi region are large REE deposits. 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