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The temperature of homogenization (Th) in quartz from the potassic zone are Th=480-780 °C and melting temperatures (Tm) of the" /> <title>(PDF) Fluid inclusion evolution at the La Verde porphyry copper deposit, Michocan, Mexico | gilles levresse - Academia.edu</title> <link rel="canonical" href="https://www.academia.edu/4240488/Fluid_inclusion_evolution_at_the_La_Verde_porphyry_copper_deposit_Michocan_Mexico" /> <script async src="https://www.googletagmanager.com/gtag/js?id=G-5VKX33P2DS"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-5VKX33P2DS', { cookie_domain: 'academia.edu', send_page_view: false, }); gtag('event', 'page_view', { 'controller': "single_work", 'action': "show", 'controller_action': 'single_work#show', 'logged_in': 'false', 'edge': 'unknown', // Send nil if there is no A/B test bucket, in case some records get logged // with missing data - that way we can distinguish between the two cases. // ab_test_bucket should be of the form <ab_test_name>:<bucket> 'ab_test_bucket': null, }) </script> <script> var $controller_name = 'single_work'; var $action_name = "show"; var $rails_env = 'production'; var $app_rev = '92477ec68c09d28ae4730a4143c926f074776319'; var $domain = 'academia.edu'; var $app_host = "academia.edu"; var $asset_host = "academia-assets.com"; var $start_time = new Date().getTime(); var $recaptcha_key = "6LdxlRMTAAAAADnu_zyLhLg0YF9uACwz78shpjJB"; var $recaptcha_invisible_key = "6Lf3KHUUAAAAACggoMpmGJdQDtiyrjVlvGJ6BbAj"; var $disableClientRecordHit = false; </script> <script> window.require = { config: function() { return function() {} } } </script> <script> window.Aedu = window.Aedu || {}; window.Aedu.hit_data = null; window.Aedu.serverRenderTime = new Date(1732859001000); window.Aedu.timeDifference = new Date().getTime() - 1732859001000; </script> <script type="application/ld+json">{"@context":"https://schema.org","@type":"ScholarlyArticle","abstract":"La Verde porphyry copper deposit presents Ca-Na-K hydrothermal alteration, which is typical of porphyry copperdeposits. The temperature of homogenization (Th) in quartz from the potassic zone are Th=480-780 °C and melting temperatures (Tm) of the NaCl range from 430 to 570 °C, which correspond to salinities between 50 and 65 wt.% NaCl. In the stockwork zone, both subsaturated and saturated fluids are present Th range from 180 to 480 °C and salinitie group around 11–14 eq. wt.% CaCl2 and 22–54 wt.% NaCl. It is possible that these conditions reflect a plastic-brittle phase transition that characterizes porphyry copper deposit formation. In the propylitic alteration zone, the fluids are undersaturated, the salinities are 9–10 eq. wt.% CaCl2 and 5–23 eq. wt.% NaCl with Th range from 185 to 395 °C. Calcite in late-stage veinlets has salinities of 12.8–22.3 eq. wt.% NaCl. with Th range from 150 to 265 °C. La Verde porphyry copper deposit data present boiling in the mineralized zone caused by a drop in pressure from 1200 bars (equivalent to ca. 4.8 km) to 345 bars. Late-stage fluids show dilution by non-magmatic waters. 6345 values range from + l.15 % to +2.50 %o and 613C in calcite from −6 %o to −2the features are characteristic of magmatic fluids.","author":[{"@context":"https://schema.org","@type":"Person","name":"gilles levresse"}],"contributor":[],"dateCreated":"2013-08-14","dateModified":"2014-04-23","datePublished":"2003-01-01","headline":"Fluid inclusion evolution at the La Verde porphyry copper deposit, Michocan, Mexico","inLanguage":"en","keywords":[],"locationCreated":null,"publication":"Journal of Geochemical Exploration","publisher":{"@context":"https://schema.org","@type":"Organization","name":null},"image":null,"thumbnailUrl":null,"url":"https://www.academia.edu/4240488/Fluid_inclusion_evolution_at_the_La_Verde_porphyry_copper_deposit_Michocan_Mexico","sourceOrganization":[{"@context":"https://schema.org","@type":"EducationalOrganization","name":"unam"}]}</script><link rel="stylesheet" media="all" 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"https://www.academia.edu/login?post_login_redirect_url=https%3A%2F%2Fwww.academia.edu%2F4240488%2FFluid_inclusion_evolution_at_the_La_Verde_porphyry_copper_deposit_Michocan_Mexico%3Fauto%3Ddownload"; window.loswp.translateUrl = "https://www.academia.edu/login?post_login_redirect_url=https%3A%2F%2Fwww.academia.edu%2F4240488%2FFluid_inclusion_evolution_at_the_La_Verde_porphyry_copper_deposit_Michocan_Mexico%3Fshow_translation%3Dtrue"; window.loswp.previewableAttachments = [{"id":49975688,"identifier":"Attachment_49975688","shouldShowBulkDownload":false}]; window.loswp.shouldDetectTimezone = true; window.loswp.shouldShowBulkDownload = true; window.loswp.showSignupCaptcha = false window.loswp.willEdgeCache = false; window.loswp.work = {"work":{"id":4240488,"created_at":"2013-08-14T04:25:02.598-07:00","from_world_paper_id":119084270,"updated_at":"2021-01-13T01:47:41.379-08:00","_data":{"abstract":"La Verde porphyry copper deposit presents Ca-Na-K hydrothermal alteration, which is typical of porphyry copperdeposits. The temperature of homogenization (Th) in quartz from the potassic zone are Th=480-780 °C and melting temperatures (Tm) of the NaCl range from 430 to 570 °C, which correspond to salinities between 50 and 65 wt.% NaCl. In the stockwork zone, both subsaturated and saturated fluids are present Th range from 180 to 480 °C and salinitie group around 11–14 eq. wt.% CaCl2 and 22–54 wt.% NaCl. It is possible that these conditions reflect a plastic-brittle phase transition that characterizes porphyry copper deposit formation. In the propylitic alteration zone, the fluids are undersaturated, the salinities are 9–10 eq. wt.% CaCl2 and 5–23 eq. wt.% NaCl with Th range from 185 to 395 °C. Calcite in late-stage veinlets has salinities of 12.8–22.3 eq. wt.% NaCl. with Th range from 150 to 265 °C. La Verde porphyry copper deposit data present boiling in the mineralized zone caused by a drop in pressure from 1200 bars (equivalent to ca. 4.8 km) to 345 bars. Late-stage fluids show dilution by non-magmatic waters. 6345 values range from + l.15 % to +2.50 %o and 613C in calcite from −6 %o to −2the features are characteristic of magmatic fluids.","publication_date":"2003,,","publication_name":"Journal of Geochemical Exploration"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"en","title":"Fluid inclusion evolution at the La Verde porphyry copper deposit, Michocan, Mexico","broadcastable":true,"draft":null,"has_indexable_attachment":true,"indexable":true}}["work"]; window.loswp.workCoauthors = [1509563]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; window.loswp.fullPageMobileSutdModalVariant = "full_page_mobile_sutd_modal"; window.loswp.useOptimizedScribd4genScript = false; window.loswp.appleClientId = 'edu.academia.applesignon';</script><script defer="" src="https://accounts.google.com/gsi/client"></script><div class="ds-loswp-container"><div class="ds-work-card--grid-container"><div class="ds-work-card--container js-loswp-work-card"><div class="ds-work-card--cover"><div class="ds-work-cover--wrapper"><div class="ds-work-cover--container"><button class="ds-work-cover--clickable js-swp-download-button" data-signup-modal="{"location":"swp-splash-paper-cover","attachmentId":49975688,"attachmentType":"pdf"}"><img alt="First page of “Fluid inclusion evolution at the La Verde porphyry copper deposit, Michocan, Mexico”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/49975688/mini_magick20190130-10244-1ucwuh1.png?1548846521" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/assets/single_work_splash/adobe.icon-574afd46eb6b03a77a153a647fb47e30546f9215c0ee6a25df597a779717f9ef.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">Fluid inclusion evolution at the La Verde porphyry copper deposit, Michocan, Mexico</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="1509563" href="https://unam.academia.edu/gilleslevresse"><img alt="Profile image of gilles levresse" class="ds-work-card--author-avatar" src="https://0.academia-photos.com/1509563/535568/669890/s65_gilles.levresse.jpg" />gilles levresse</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">2003, Journal of Geochemical Exploration</p><div class="ds-work-card--work-metadata"><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">visibility</span><p class="ds2-5-body-sm" id="work-metadata-view-count">…</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span><p class="ds2-5-body-sm">4 pages</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">link</span><p class="ds2-5-body-sm">1 file</p></div></div><script>(async () => { const workId = 4240488; const worksViewsPath = "/v0/works/views?subdomain_param=api&work_ids%5B%5D=4240488"; const getWorkViews = async (workId) => { const response = await fetch(worksViewsPath); if (!response.ok) { throw new Error('Failed to load work views'); } const data = await response.json(); return data.views[workId]; }; // Get the view count for the work - we send this immediately rather than waiting for // the DOM to load, so it can be available as soon as possible (but without holding up // the backend or other resource requests, because it's a bit expensive and not critical). const viewCount = await getWorkViews(workId); const updateViewCount = (viewCount) => { const viewCountNumber = Number(viewCount); if (!viewCountNumber) { throw new Error('Failed to parse view count'); } const commaizedViewCount = viewCountNumber.toLocaleString(); const viewCountBody = document.getElementById('work-metadata-view-count'); if (viewCountBody) { viewCountBody.textContent = `${commaizedViewCount} views`; } else { throw new Error('Failed to find work views element'); } }; // If the DOM is still loading, wait for it to be ready before updating the view count. if (document.readyState === "loading") { document.addEventListener('DOMContentLoaded', () => { updateViewCount(viewCount); }); // Otherwise, just update it immediately. } else { updateViewCount(viewCount); } })();</script></div><p class="ds-work-card--work-abstract ds-work-card--detail ds2-5-body-md">La Verde porphyry copper deposit presents Ca-Na-K hydrothermal alteration, which is typical of porphyry copperdeposits. The temperature of homogenization (Th) in quartz from the potassic zone are Th=480-780 °C and melting temperatures (Tm) of the NaCl range from 430 to 570 °C, which correspond to salinities between 50 and 65 wt.% NaCl. In the stockwork zone, both subsaturated and saturated fluids are present Th range from 180 to 480 °C and salinitie group around 11–14 eq. wt.% CaCl2 and 22–54 wt.% NaCl. It is possible that these conditions reflect a plastic-brittle phase transition that characterizes porphyry copper deposit formation. In the propylitic alteration zone, the fluids are undersaturated, the salinities are 9–10 eq. wt.% CaCl2 and 5–23 eq. wt.% NaCl with Th range from 185 to 395 °C. Calcite in late-stage veinlets has salinities of 12.8–22.3 eq. wt.% NaCl. with Th range from 150 to 265 °C. La Verde porphyry copper deposit data present boiling in the mineralized zone caused by a drop in pressure from 1200 bars (equivalent to ca. 4.8 km) to 345 bars. Late-stage fluids show dilution by non-magmatic waters. 6345 values range from + l.15 % to +2.50 %o and 613C in calcite from −6 %o to −2the features are characteristic of magmatic fluids.</p><div class="ds-work-card--button-container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--work-card","attachmentId":49975688,"attachmentType":"pdf","workUrl":"https://www.academia.edu/4240488/Fluid_inclusion_evolution_at_the_La_Verde_porphyry_copper_deposit_Michocan_Mexico"}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--work-card","attachmentId":49975688,"attachmentType":"pdf","workUrl":"https://www.academia.edu/4240488/Fluid_inclusion_evolution_at_the_La_Verde_porphyry_copper_deposit_Michocan_Mexico"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div></div><div data-auto_select="false" data-client_id="331998490334-rsn3chp12mbkiqhl6e7lu2q0mlbu0f1b" data-doc_id="49975688" data-landing_url="https://www.academia.edu/4240488/Fluid_inclusion_evolution_at_the_La_Verde_porphyry_copper_deposit_Michocan_Mexico" data-login_uri="https://www.academia.edu/registrations/google_one_tap" data-moment_callback="onGoogleOneTapEvent" id="g_id_onload"></div><div class="ds-top-related-works--grid-container"><div class="ds-related-content--container ds-top-related-works--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="0" data-entity-id="95006422" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/95006422/Petrology_of_the_Yerington_Batholith_Nevada_evidence_for_evolution_of_porphyry_copper_ore_fluids">Petrology of the Yerington Batholith, Nevada; evidence for evolution of porphyry copper ore fluids</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="62571333" href="https://independent.academia.edu/JohnDilles">John Dilles</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Economic Geology, 1987</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Petrology of the Yerington Batholith, Nevada; evidence for evolution of porphyry copper ore fluids","attachmentId":97307969,"attachmentType":"pdf","work_url":"https://www.academia.edu/95006422/Petrology_of_the_Yerington_Batholith_Nevada_evidence_for_evolution_of_porphyry_copper_ore_fluids","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/95006422/Petrology_of_the_Yerington_Batholith_Nevada_evidence_for_evolution_of_porphyry_copper_ore_fluids"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="1" data-entity-id="59974453" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/59974453/maydagan_2015_Porphyry_to_Epithermal_Transition_in_the_Altar_Cu_Au_Mo_Deposit_Argentina_Studied_by_Cathodoluminescence_LA_ICP_MS_and_Fluid_Inclusion_Analysis">maydagan 2015- Porphyry to Epithermal Transition in the Altar Cu-(Au-Mo) Deposit, Argentina, Studied by Cathodoluminescence, LA-ICP-MS, and Fluid Inclusion Analysis</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="113523103" href="https://uncoma.academia.edu/pablonavarro">pablo navarro</a></div><p class="ds-related-work--abstract ds2-5-body-sm">The middle to late Miocene Altar porphyry Cu-(Au-Mo) deposit, located in the Andean Main Cordillera of San Juan Province (Argentina), is characterized by the superposition of multiple vein generations consisting of both porphyry-type and high sulfidation epithermal-style alteration and mineralization. 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ds2-5-body-link" data-author-id="10074160" href="https://independent.academia.edu/RNedialkov">Rossen Nedialkov</a></div><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"PETROLOGY OF THE MAGMATISM OF THE ASSAREL COPPER-PORPHYRY DEPOSIT","attachmentId":41369631,"attachmentType":"pdf","work_url":"https://www.academia.edu/20434558/PETROLOGY_OF_THE_MAGMATISM_OF_THE_ASSAREL_COPPER_PORPHYRY_DEPOSIT","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/20434558/PETROLOGY_OF_THE_MAGMATISM_OF_THE_ASSAREL_COPPER_PORPHYRY_DEPOSIT"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="4" data-entity-id="14268490" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/14268490/Preliminary_Model_of_Porphyry_Copper_Deposits_Berger_deceased_Ayuso_Wynn_Seal_">Preliminary Model of Porphyry Copper Deposits (Berger-deceased, Ayuso, Wynn, Seal)</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="4791380" href="https://unitedstatesgeologicalsurvey.academia.edu/JeffWynn">Jeff Wynn</a></div><p class="ds-related-work--abstract ds2-5-body-sm">Porphyry copper deposits result from the complex interactions and feedbacks of many processes. Owing to the complexity, a succinct definition that includes the essential attributes of this deposit class is elusive. Consequently, this descriptive model uses a working definition of a porphyry copper deposit. A porphyry copper deposit is 1. One wherein copper-bearing sulfides are localized in a network of fracture-controlled stockwork veinlets and as disseminated grains in the adjacent altered rock matrix; 2. Alteration and ore mineralization at 1-4 km depth are genetically related to magma reservoirs emplaced into the shallow crust (6-8+ km), predominantly intermediate to silicic in composition, in magmatic arcs above subduction zones; 3. Intrusive rock complexes that are emplaced immediately before porphyry deposit formation and that host the deposits are predominantly in the form of upright vertical cylindrical stocks and/or complexes of dikes; 4. Zones of phyllic-argillic and marginal propylitic alteration overlapping and surrounding a potassic alteration assemblage; and, 5. Copper may also be introduced during overprinting phyllic-argillic alteration events.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Preliminary Model of Porphyry Copper Deposits (Berger-deceased, Ayuso, Wynn, Seal)","attachmentId":38252217,"attachmentType":"pdf","work_url":"https://www.academia.edu/14268490/Preliminary_Model_of_Porphyry_Copper_Deposits_Berger_deceased_Ayuso_Wynn_Seal_","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/14268490/Preliminary_Model_of_Porphyry_Copper_Deposits_Berger_deceased_Ayuso_Wynn_Seal_"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="55406623" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/55406623/Overheated_Cu_bearing_magmas_in_the_Zald%C4%B1_var_porphyry_Cu_deposit_Northern_Chile_Geodynamic_consequences">Overheated, Cu-bearing magmas in the Zaldı́var porphyry-Cu deposit, Northern Chile. Geodynamic consequences</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="6127185" href="https://independent.academia.edu/IgorNikogosian">Igor Nikogosian</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Tectonophysics, 2002</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Overheated, Cu-bearing magmas in the Zaldı́var porphyry-Cu deposit, Northern Chile. Geodynamic consequences","attachmentId":71290738,"attachmentType":"pdf","work_url":"https://www.academia.edu/55406623/Overheated_Cu_bearing_magmas_in_the_Zald%C4%B1_var_porphyry_Cu_deposit_Northern_Chile_Geodynamic_consequences","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/55406623/Overheated_Cu_bearing_magmas_in_the_Zald%C4%B1_var_porphyry_Cu_deposit_Northern_Chile_Geodynamic_consequences"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="21712267" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/21712267/Zoned_Base_Metal_Mineralization_in_a_Porphyry_System_Origin_and_Evolution_of_Mineralizing_Fluids_in_the_Morococha_District_Peru">Zoned Base Metal Mineralization in a Porphyry System: Origin and Evolution of Mineralizing Fluids in the Morococha District, Peru</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="42897830" href="https://independent.academia.edu/YordyCv">Yordy Cv</a></div><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Zoned Base Metal Mineralization in a Porphyry System: Origin and Evolution of Mineralizing Fluids in the Morococha District, Peru","attachmentId":42447519,"attachmentType":"pdf","work_url":"https://www.academia.edu/21712267/Zoned_Base_Metal_Mineralization_in_a_Porphyry_System_Origin_and_Evolution_of_Mineralizing_Fluids_in_the_Morococha_District_Peru","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/21712267/Zoned_Base_Metal_Mineralization_in_a_Porphyry_System_Origin_and_Evolution_of_Mineralizing_Fluids_in_the_Morococha_District_Peru"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="92444139" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/92444139/Oxygen_and_hydrogen_isotope_characteristics_of_hydrothermal_alteration_at_the_Ann_Mason_porphyry_copper_deposit_Yerington_Nevada">Oxygen and hydrogen isotope characteristics of hydrothermal alteration at the Ann-Mason porphyry copper deposit, Yerington, Nevada</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="198737683" href="https://independent.academia.edu/DillesJohn">John Dilles</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Economic Geology, 1992</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Oxygen and hydrogen isotope characteristics of hydrothermal alteration at the Ann-Mason porphyry copper deposit, Yerington, Nevada","attachmentId":95450962,"attachmentType":"pdf","work_url":"https://www.academia.edu/92444139/Oxygen_and_hydrogen_isotope_characteristics_of_hydrothermal_alteration_at_the_Ann_Mason_porphyry_copper_deposit_Yerington_Nevada","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/92444139/Oxygen_and_hydrogen_isotope_characteristics_of_hydrothermal_alteration_at_the_Ann_Mason_porphyry_copper_deposit_Yerington_Nevada"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="59967952" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/59967952/SILLITOE_2010_Porphyry_Copper_Systems_Porphyry_Copper_Systems_">SILLITOE 2010 - Porphyry Copper Systems Porphyry Copper Systems*</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="113523103" href="https://uncoma.academia.edu/pablonavarro">pablo navarro</a></div><p class="ds-related-work--abstract ds2-5-body-sm">Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sedimenthosted Au deposits in increasingly peripheral locations; and superjacent high-and intermediate-sulfidation epithermal deposits. The systems commonly define linear belts, some many hundreds of kilometers long, as well as occurring less commonly in apparent isolation. The systems are closely related to underlying composite plutons, at paleodepths of 5 to 15 km, which represent the supply chambers for the magmas and fluids that formed the vertically elongate (>3 km) stocks or dike swarms and associated mineralization. The plutons may erupt volcanic rocks, but generally prior to initiation of the systems. Commonly, several discrete stocks are emplaced in and above the pluton roof zones, resulting in either clusters or structurally controlled alignments of porphyry Cu systems. The rheology and composition of the host rocks may strongly influence the size, grade, and type of mineralization generated in porphyry Cu systems. Individual systems have life spans of ~100,000 to several million years, whereas deposit clusters or alignments as well as entire belts may remain active for 10 m.y. or longer. The alteration and mineralization in porphyry Cu systems, occupying many cubic kilometers of rock, are zoned outward from the stocks or dike swarms, which typically comprise several generations of intermediate to felsic porphyry intrusions. Porphyry Cu ± Au ± Mo deposits are centered on the intrusions, whereas carbonate wall rocks commonly host proximal Cu-Au skarns, less common distal Zn-Pb and/or Au skarns, and, beyond the skarn front, carbonate-replacement Cu and/or Zn-Pb-Ag ± Au deposits, and/or sediment-hosted (distal-disseminated) Au deposits. Peripheral mineralization is less conspicuous in noncarbonate wall rocks but may include base metal-or Au-bearing veins and mantos. High-sulfidation epithermal deposits may occur in lithocaps above porphyry Cu deposits, where massive sulfide lodes tend to develop in deeper feeder structures and Au ± Ag-rich, disseminated deposits within the uppermost 500 m or so. Less commonly, intermediatesulfidation epithermal mineralization, chiefly veins, may develop on the peripheries of the lithocaps. The alteration-mineralization in the porphyry Cu deposits is zoned upward from barren, early sodic-calcic through potentially ore-grade potassic, chlorite-sericite, and sericitic, to advanced argillic, the last of these constituting the lithocaps, which may attain >1 km in thickness if unaffected by significant erosion. Low sulfidation-state chalcopyrite ± bornite assemblages are characteristic of potassic zones, whereas higher sulfidation-state sulfides are generated progressively upward in concert with temperature decline and the concomitant greater degrees of hydrolytic alteration, culminating in pyrite ± enargite ± covellite in the shallow parts of the lithocaps. The porphyry Cu mineralization occurs in a distinctive sequence of quartz-bearing veinlets as well as in disseminated form in the altered rock between them. Magmatic-hydrothermal breccias may form during porphyry intrusion, with some of them containing high-grade mineralization because of their intrinsic permeability. In contrast, most phreatomagmatic breccias, constituting maar-diatreme systems, are poorly mineralized at both the porphyry Cu and lithocap levels, mainly because many of them formed late in the evolution of systems. Porphyry Cu systems are initiated by injection of oxidized magma saturated with Sand metal-rich, aqueous fluids from cupolas on the tops of the subjacent parental plutons. The sequence of alteration-mineralization events charted above is principally a consequence of progressive rock and fluid cooling, from >700° to <250°C, caused by solidification of the underlying parental plutons and downward propagation of the lithostatichydrostatic transition. Once the plutonic magmas stagnate, the high-temperature, generally two-phase hypersaline liquid and vapor responsible for the potassic alteration and contained mineralization at depth and early overlying advanced argillic alteration, respectively, gives way, at <350°C, to a single-phase, low-to moderatesalinity liquid that causes the sericite-chlorite and sericitic alteration and associated mineralization. This same liquid also causes mineralization of the peripheral parts of systems, including the overlying lithocaps. The progressive thermal decline of the systems combined with synmineral paleosurface degradation results in the characteristic overprinting (telescoping) and partial to total reconstitution of older by younger alteration-mineralization types. Meteoric water is not required for formation of this alteration-mineralization sequence although its late ingress is commonplace. Many features of porphyry Cu systems at all scales need to be taken into account during planning and execution of base and precious metal exploration programs in magmatic arc settings. At the regional and district scales, the occurrence of many deposits in belts, within which clusters and alignments are prominent, is a powerful exploration concept once one or more systems are known. At the deposit scale, particularly in the porphyry Cu environment, early-formed features commonly, but by no means always, give rise to the best orebodies. Late-stage alteration overprints may cause partial depletion or complete removal of Cu and Au, but metal concentration may also result. Recognition of single ore deposit types, whether economic or not, in porphyry Cu systems may be directly employed in combination with alteration and metal zoning concepts to</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"SILLITOE 2010 - Porphyry Copper Systems Porphyry Copper Systems*","attachmentId":73623980,"attachmentType":"pdf","work_url":"https://www.academia.edu/59967952/SILLITOE_2010_Porphyry_Copper_Systems_Porphyry_Copper_Systems_","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/59967952/SILLITOE_2010_Porphyry_Copper_Systems_Porphyry_Copper_Systems_"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="7018916" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/7018916/Porphyry_Copper_Systems_Introduction">Porphyry Copper Systems* Introduction</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="11959013" href="https://independent.academia.edu/mperal">miguel peral</a></div><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Porphyry Copper Systems* Introduction","attachmentId":33678086,"attachmentType":"pdf","work_url":"https://www.academia.edu/7018916/Porphyry_Copper_Systems_Introduction","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/7018916/Porphyry_Copper_Systems_Introduction"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":49975688,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":49975688,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_49975688" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. You can download the paper by clicking the button above.</p></div></div></div></div><div class="ds-sidebar--container js-work-sidebar"><div class="ds-related-content--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="0" data-entity-id="64977819" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/64977819/Temperature_composition_relationships_of_authigenic_micaceous_minerals_in_the_Los_Azufres_geothermal_system">Temperature ? composition relationships of authigenic micaceous minerals in the Los Azufres geothermal system</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="45617888" href="https://independent.academia.edu/GeorginaIzquierdo">Georgina Izquierdo</a></div><p 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Eastoe</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Economic Geology, 1988</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Relationships between a porphyry Cu-Mo deposit, base and precious metal veins and Laramide intrusions, Mineral Park, Arizona","attachmentId":72391712,"attachmentType":"pdf","work_url":"https://www.academia.edu/57536795/Relationships_between_a_porphyry_Cu_Mo_deposit_base_and_precious_metal_veins_and_Laramide_intrusions_Mineral_Park_Arizona","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" 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Pettke</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Mineralium Deposita, 2008</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Fluid and source magma evolution of the Questa porphyry Mo deposit, New Mexico, USA","attachmentId":51030856,"attachmentType":"pdf","work_url":"https://www.academia.edu/30589609/Fluid_and_source_magma_evolution_of_the_Questa_porphyry_Mo_deposit_New_Mexico_USA","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/30589609/Fluid_and_source_magma_evolution_of_the_Questa_porphyry_Mo_deposit_New_Mexico_USA"><span class="ds2-5-text-link__content">View 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js-related-work-sidebar-card" data-collection-position="10" data-entity-id="10527701" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/10527701/New_thermochronologic_constraints_on_the_evolution_of_the_Zald%C3%ADvar_porphyry_copper_deposit_Northern_Chile">New thermochronologic constraints on the evolution of the Zaldívar porphyry copper deposit, Northern Chile</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="25801762" href="https://independent.academia.edu/EduardoCampos24">Eduardo Campos</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Mineralium Deposita, 2009</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"New thermochronologic constraints on 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data-entity-id="92197966" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/92197966/Wall_rock_alteration_and_hydrothermal_flow_paths_about_the_Ann_Mason_porphyry_copper_deposit_Nevada_a_6_km_vertical_reconstruction">Wall-rock alteration and hydrothermal flow paths about the Ann-Mason porphyry copper deposit, Nevada; a 6-km vertical reconstruction</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="198737683" href="https://independent.academia.edu/DillesJohn">John Dilles</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Economic Geology, 1992</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Wall-rock alteration and hydrothermal flow paths about the 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data-collection-position="12" data-entity-id="118559054" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/118559054/Hydrothermal_evolution_in_the_Calabona_porphyry_copper_system_Sardinia_Italy_the_path_to_an_uneconomic_deposit">Hydrothermal evolution in the Calabona porphyry copper system (Sardinia, Italy); the path to an uneconomic deposit</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="283014291" href="https://independent.academia.edu/StefaniniBarbara">Barbara Stefanini</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Economic Geology, 1996</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Hydrothermal evolution in the Calabona porphyry copper 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