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"https://www.academia.edu/login?post_login_redirect_url=https%3A%2F%2Fwww.academia.edu%2F114652234%2FHydrothermal_Quartz_Vein_Formation_Revealed_by_Coupled_SEM_CL_Imaging_and_Fluid_Inclusion_Microthermometry_Shuteen_Complex_South_Gobi_Mongolia%3Fshow_translation%3Dtrue"; window.loswp.previewableAttachments = [{"id":111293116,"identifier":"Attachment_111293116","shouldShowBulkDownload":false}]; window.loswp.shouldDetectTimezone = true; window.loswp.shouldShowBulkDownload = true; window.loswp.showSignupCaptcha = false window.loswp.willEdgeCache = false; window.loswp.work = {"work":{"id":114652234,"created_at":"2024-02-08T11:37:45.735-08:00","from_world_paper_id":249547990,"updated_at":"2024-11-23T21:55:09.019-08:00","_data":{"publisher":"Wiley","grobid_abstract":"Scanning electron microscopy-cathodoluminescence (SEM-CL) imaging of vein quartz in the Cu-mineralised, Shuteen Complex (South Gobi, Mongolia) has revealed a complex history of crystal growth, dissolution and microfracture healing, associated with several hydrothermal events that could not be detected using other observational techniques (e.g. transmitted/reflected light microscopy, back-scattered electron imaging, or secondary electron imaging). The quartz initially grew as CL-bright/grey crystals in a 345±30°C liquid reservoir, as inferred by the analysis of primary liquid fluid inclusions (average Th of 343°C; 6.6~7.7 wt% NaCl eq). Quartz precipitation occurred at the edge of the crystals as reservoir fluids cooled to 260±25°C, as indicated by micron-scale CL-dark/CL-bright quartz growth bands containing abundant fluid inclusions (with an average T h values of 261°C). Pressure fluctuations were the likely cause of dissolution, as SEM-CL imaging reveals the quartz have corroded or rounded crystal edges, and precipitation of later quartz into open space. SEM-CL imaging shows the quartz contains healed microfractures that trapped low salinity fluids (3.9 wt% NaCl eq) with Th values of 173±15°C. SEM-CL imaging provides a means of deciphering the thermal and chemical evolution of the fossil Shuteen hydrothermal system, and the nature of hydrothermal quartz vein-forming processes, by facilitating the correlation of distinct fluid inclusion populations and their relative chronology, with specific hydrothermal events.","publication_date":"2005,,","publication_name":"Resource Geology","grobid_abstract_attachment_id":"111293116"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"en","title":"Hydrothermal Quartz Vein Formation, Revealed by Coupled SEM-CL Imaging and Fluid Inclusion Microthermometry: Shuteen Complex, South Gobi, Mongolia","broadcastable":false,"draft":null,"has_indexable_attachment":true,"indexable":true}}["work"]; window.loswp.workCoauthors = [235727274]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; window.loswp.fullPageMobileSutdModalVariant = "control"; window.loswp.useOptimizedScribd4genScript = false; window.loginModal = {}; window.loginModal.appleClientId = 'edu.academia.applesignon'; window.userInChina = "false";</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":111293116,"attachmentType":"pdf"}"><img alt="First page of “Hydrothermal Quartz Vein Formation, Revealed by Coupled SEM-CL Imaging and Fluid Inclusion Microthermometry: Shuteen Complex, South Gobi, Mongolia”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/111293116/mini_magick20240208-1-yw59pw.png?1707421169" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/images/single_work_splash/adobe_icon.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">Hydrothermal Quartz Vein Formation, Revealed by Coupled SEM-CL Imaging and Fluid Inclusion Microthermometry: Shuteen Complex, South Gobi, Mongolia</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="235727274" href="https://independent.academia.edu/GregoryBignall"><img alt="Profile image of Gregory Bignall" class="ds-work-card--author-avatar" src="//a.academia-assets.com/images/s65_no_pic.png" />Gregory Bignall</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">2005, Resource Geology</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">8 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 = 114652234; 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if (!viewCountBody) { throw new Error('Failed to find work views element'); } viewCountBody.textContent = `${commaizedViewCount} views`; } catch (error) { // Remove the whole views element if there was some issue parsing. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); throw new Error(`Failed to parse view count: ${viewCount}`, error); } }; // 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">Scanning electron microscopy-cathodoluminescence (SEM-CL) imaging of vein quartz in the Cu-mineralised, Shuteen Complex (South Gobi, Mongolia) has revealed a complex history of crystal growth, dissolution and microfracture healing, associated with several hydrothermal events that could not be detected using other observational techniques (e.g. transmitted/reflected light microscopy, back-scattered electron imaging, or secondary electron imaging). The quartz initially grew as CL-bright/grey crystals in a 345±30°C liquid reservoir, as inferred by the analysis of primary liquid fluid inclusions (average Th of 343°C; 6.6~7.7 wt% NaCl eq). Quartz precipitation occurred at the edge of the crystals as reservoir fluids cooled to 260±25°C, as indicated by micron-scale CL-dark/CL-bright quartz growth bands containing abundant fluid inclusions (with an average T h values of 261°C). Pressure fluctuations were the likely cause of dissolution, as SEM-CL imaging reveals the quartz have corroded or rounded crystal edges, and precipitation of later quartz into open space. SEM-CL imaging shows the quartz contains healed microfractures that trapped low salinity fluids (3.9 wt% NaCl eq) with Th values of 173±15°C. SEM-CL imaging provides a means of deciphering the thermal and chemical evolution of the fossil Shuteen hydrothermal system, and the nature of hydrothermal quartz vein-forming processes, by facilitating the correlation of distinct fluid inclusion populations and their relative chronology, with specific hydrothermal events.</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":111293116,"attachmentType":"pdf","workUrl":"https://www.academia.edu/114652234/Hydrothermal_Quartz_Vein_Formation_Revealed_by_Coupled_SEM_CL_Imaging_and_Fluid_Inclusion_Microthermometry_Shuteen_Complex_South_Gobi_Mongolia"}">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":111293116,"attachmentType":"pdf","workUrl":"https://www.academia.edu/114652234/Hydrothermal_Quartz_Vein_Formation_Revealed_by_Coupled_SEM_CL_Imaging_and_Fluid_Inclusion_Microthermometry_Shuteen_Complex_South_Gobi_Mongolia"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div><div class="ds-signup-banner-trigger-container"><div class="ds-signup-banner-trigger ds-signup-banner-trigger-control"></div></div><div class="ds-signup-banner ds-signup-banner-control"><div id="ds-signup-banner-close-button"><button class="ds2-5-button ds2-5-button--secondary ds2-5-button--inverse"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">close</span></button></div><div class="ds-signup-banner-ctas" data-impression-entity-id="114652234" data-impression-entity-type="2" data-impression-source="signup-banner"><img src="//a.academia-assets.com/images/academia-logo-capital-white.svg" /><h4 class="ds2-5-heading-serif-sm">Sign up for access to the world's latest research</h4><button class="ds2-5-button ds2-5-button--inverse ds2-5-button--full-width js-swp-download-button" data-signup-modal="{"location":"signup-banner"}">Sign up for free<span class="material-symbols-outlined" style="font-size: 20px" translate="no">arrow_forward</span></button></div><div class="ds-signup-banner-divider"></div><div class="ds-signup-banner-reasons"><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Get notified about relevant papers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Save papers to use in your research</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Join the discussion with peers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Track your impact</span></div></div></div><script>(() => { // Set up signup banner show/hide behavior: // 1. 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Coupled with capacities of hosting fluid inclusions and recording varieties of microtextures, its solubility behavior may provide unparalleled insights into hydrothermal processes. In this study, the Linglong goldfield in Jiaodong is targeted to investigate gold-producing quartz veining process. Scanning electron microscope (SEM)-cathodoluminescence (CL) imaging uncovered three episodes of quartz deposition, intervened by an episode of quartz dissolution. Based on newly-developed quartz solubility diagrams and CL-aided fluid inclusion microthermometry, it is proposed that precipitation of the earliest quartz (Qz1) was controlled by CO2 content increase and subordinately affected by decompressional cooling, leading to the formation of the early thick gold-barren veins (V1); the second generation of quartz (Qz2a) was formed by the same fluids that may have been diluted and cooled by meteoric water, leading to a greatly re...</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":"Auriferous Quartz Veining Due to CO2 Content Variations and Decompressional Cooling, Revealed by Quartz Solubility, SEM-CL and Fluid Inclusion Analyses (The Linglong Goldfield, Jiaodong)","attachmentId":72995381,"attachmentType":"pdf","work_url":"https://www.academia.edu/58721598/Auriferous_Quartz_Veining_Due_to_CO2_Content_Variations_and_Decompressional_Cooling_Revealed_by_Quartz_Solubility_SEM_CL_and_Fluid_Inclusion_Analyses_The_Linglong_Goldfield_Jiaodong_","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/58721598/Auriferous_Quartz_Veining_Due_to_CO2_Content_Variations_and_Decompressional_Cooling_Revealed_by_Quartz_Solubility_SEM_CL_and_Fluid_Inclusion_Analyses_The_Linglong_Goldfield_Jiaodong_"><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="109101856" 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/109101856/Fluid_rock_interaction_processes_in_the_Te_Kopia_geothermal_field_New_Zealand_revealed_by_SEM_CL_imaging">Fluid-rock interaction processes in the Te Kopia geothermal field (New Zealand) revealed by SEM-CL imaging</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="235727274" href="https://independent.academia.edu/GregoryBignall">Gregory Bignall</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Geothermics, 2004</p><p class="ds-related-work--abstract ds2-5-body-sm">Scanning electron microscopy-cathodoluminescence (SEM-CL) imaging of hydrothermal quartz exposed by weathering in the Te Kopia geothermal field (New Zealand) has revealed a history of crystal growth, dissolution, overprinting and fracturing that cannot be detected using other observational techniques (e.g. transmitted or reflected light microscopy, back-scattered electron imaging or secondary electron imaging). The crystals initially grew as CL-dark quartz, at least 350 m below their present location on the Paeroa Fault scarp, in a neutral pH, 215 ± 10 • C liquid reservoir (inferred from the analysis of primary liquid fluid inclusions: mean T h of 213 • C; 0.2-0.4 wt.% NaCl eq.). Relict quartz-adularia-illite alteration occurs at the surface, in the vicinity of the quartz crystals, and in drillcores from the nearby TK-1 exploration well. Repeated movement on the Paeroa Fault uplifted pyroclastic rocks hosting the quartz crystals, but also provided pathways for "pulses" of hot fluids to move through the system. Quartz precipitation occurred at the edge of the crystals as the reservoir fluids cooled, as indicated by micron-scale alternating CL-dark/CL-bright quartz growth bands, which contain fluid inclusions with T h values of 210 ± 40 • C. Pressure fluctuations were the likely cause of dissolution, marked by corroded crystal edges, with subsequent precipitation of quartz into open space. SEM-CL imaging shows that the quartz crystals contain healed fractures, which trapped low salinity fluids with T h values of 201 ± 6 • C. Low-pH fluids in the near-surface</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-rock interaction processes in the Te Kopia geothermal field (New Zealand) revealed by SEM-CL imaging","attachmentId":107323545,"attachmentType":"pdf","work_url":"https://www.academia.edu/109101856/Fluid_rock_interaction_processes_in_the_Te_Kopia_geothermal_field_New_Zealand_revealed_by_SEM_CL_imaging","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/109101856/Fluid_rock_interaction_processes_in_the_Te_Kopia_geothermal_field_New_Zealand_revealed_by_SEM_CL_imaging"><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="2" 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. We constrain the physical and chemical evolution of the hydrothermal fluids that formed this deposit based on description and distribution of vein types, scanning electron microscopy, cathodoluminescence (CL) imaging, trace elements in quartz veins, and fluid inclusion microthermometry. Quartz CL textures and trace elements (chiefly Li, Al, Ti, and Ge) differentiate among quartz generations precipitated during different mineralization and alteration events. Early quartz ± chalcopyrite ± pyrite veins and quartz ± molybdenite veins (A and B veins) show considerable complexity and were commonly reopened, and some underwent quartz dissolution. Early quartz ± chalcopyrite ± pyrite veins (A veins) are dominated by equigranular bright CL quartz with homogeneous texture. Most of these veins contain higher Ti concentrations than any other vein type (average: 100 ppm) and have low to intermediate Al concentrations (65-448 ppm). Quartz ± molybdenite (B veins) and chlorite + rutile ± hematite (C veins) veins contain quartz of intermediate CL intensity that commonly shows growth zones with oscillatory CL intensity. Quartz from these veins has intermediate Ti concentrations (~20 ppm) and Al concentrations similar to those of A veins. Quartz from later quartz + pyrite veins with quartz + muscovite ± tourmaline halos (D veins) has significantly lower CL intensity, low Ti (<15 ppm) and elevated Al concentrations (up to 1,000 ppm), and typically contains euhedral growth zones. Late veins rich in sulfides and sulfosalts show CL textures typical of epithermal deposits (dark CL quartz, crustiform banding, and euhedral growth zones). Quartz from these veins typically contains less than 5 ppm Ti, and Al, Li, and Ge concentrations are elevated relative to other vein types. Based on experimentally established relationships between Ti concentration in quartz and temperature, the decrease in Ti content in successively later quartz generations indicates that the temperature of the hydrothermal fluids decreased through time during the evolution of the system. Vein formation at Altar occurred at progressively lower pressure, shallower paleodepth, and lower temperature. Under lithostatic pressures, the magma supplied low-salinity aqueous fluids at depths of ~6 to 6.8 km (pressures of 1.6-1.8 kbar) and temperatures of 670° to 730°C (first quartz generation of early quartz ± chalcopyrite ± pyrite veins). This parental fluid episodically depressurized and cooled at temperatures and pressures below the brine-vapor solvus. Quartz ± molybdenite veins precipitated from fluids at temperatures of 510° to 540°C and pressures of 800 to 1,000 bars, corresponding to depths of 3 to 3.7 km under lithostatic pressures. Further cooling of hydrothermal fluids to temperatures between 425° and 370°C under hydrostatic pressures of 200 to 350 bars produced pyrite-quartz veins and pervasive quartz + muscovite ± tourmaline and illite alteration that overprinted the early hydrothermal assemblages. Late veins rich in sulfides and sulfosalts that overlapped the deep and intermediate high-temperature veins formed from fluids at temperatures of 250° to 280°C and pressures of 20 to 150 bars. The epithermal siliceous ledges formed from low-temperature fluids (<230°C) at hydrostatic pressures of <100 bars corresponding to depths of <<1 km.</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":"maydagan 2015- Porphyry to Epithermal Transition in the Altar Cu-(Au-Mo) Deposit, Argentina, Studied by Cathodoluminescence, LA-ICP-MS, and Fluid Inclusion Analysis","attachmentId":73627239,"attachmentType":"pdf","work_url":"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","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/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"><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="3" data-entity-id="20519690" 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/20519690/Porphyry_to_Epithermal_Transition_in_the_Altar_Cu_Au_Mo_Deposit_Argentina_Studied_by_Cathodoluminescence_LA_ICP_MS_and_Fluid_Inclusion_Analysis">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="28876500" href="https://independent.academia.edu/AgnesImpiccini">Agnes Impiccini</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Economic Geology, 2015</p><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. We constrain the physical and chemical evolution of the hydrothermal fluids that formed this deposit based on description and distribution of vein types, scanning electron microscopy, cathodoluminescence (CL) imaging, trace elements in quartz veins, and fluid inclusion microthermometry.</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":"Porphyry to Epithermal Transition in the Altar Cu-(Au-Mo) Deposit, Argentina, Studied by Cathodoluminescence, LA-ICP-MS, and Fluid Inclusion Analysis","attachmentId":41416325,"attachmentType":"pdf","work_url":"https://www.academia.edu/20519690/Porphyry_to_Epithermal_Transition_in_the_Altar_Cu_Au_Mo_Deposit_Argentina_Studied_by_Cathodoluminescence_LA_ICP_MS_and_Fluid_Inclusion_Analysis","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/20519690/Porphyry_to_Epithermal_Transition_in_the_Altar_Cu_Au_Mo_Deposit_Argentina_Studied_by_Cathodoluminescence_LA_ICP_MS_and_Fluid_Inclusion_Analysis"><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="4938002" 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/4938002/Copper_deposition_during_quartz_dissolution_by_cooling_magmatic_hydrothermal_fluids_The_Bingham_porphyry">Copper deposition during quartz dissolution by cooling magmatic hydrothermal fluids: The Bingham porphyry</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="6486462" href="https://independent.academia.edu/RedmondPatrick">Patrick Redmond</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Earth and Planetary Science Letters, 2005</p><p class="ds-related-work--abstract ds2-5-body-sm">Scanning electron microscope cathodoluminescence imaging is used to map successive generations of fluid inclusions in texturally complex quartz veinlets representing the main stage of ore metal introduction into the porphyry Cu-Au-Mo deposit at Bingham, Utah. Following conventional fluid inclusion microthermometry, laser ablation-inductively coupled plasma-mass spectrometry (LA-ICPMS) is applied to quantify copper and other major and trace-element concentrations in the evolving fluid, with the aim of identifying the ore-forming processes. Textures visible in cathodoluminescence consistently show that the bulk of vein quartz (Q1), characterized by bright luminescence, crystallized early in the vein history. Cu-Fe-sulfides are precipitated later in these veins, in a microfracture network finally filled with a second generation of dull-luminescing Q2 quartz. Mapping of brine and vapor inclusion assemblages in these successive quartz generations in combination with LA-ICPMS microanalysis shows that the fluids trapped before and after Cu-Fe-sulfide precipitation are very similar with respect to their major and minor-element composition, except for copper. Copper concentrations in inclusions associated with ore formation drop by two orders of magnitude, in a tight pressure-temperature interval between 21 and 14 MPa and 425-350 °C, several hundred degrees below the temperature of fluid exsolution from the magma. Copper deposition occurs within a limited P- T region, in which sulfide solubility shows strong normal temperature dependence while quartz solubility is retrograde. This permits copper sulfide deposition while secondary vein permeability is generated by quartz dissolution. The brittle-to-ductile transition of the quartz-feldspar-rich host rocks occurs in the same temperature range, which further enhances vein reactivation and promotes cooling and expansion of fluids ascending across the transition from lithostatic to hydrostatic conditions.</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":"Copper deposition during quartz dissolution by cooling magmatic hydrothermal fluids: The Bingham porphyry","attachmentId":49545299,"attachmentType":"pdf","work_url":"https://www.academia.edu/4938002/Copper_deposition_during_quartz_dissolution_by_cooling_magmatic_hydrothermal_fluids_The_Bingham_porphyry","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/4938002/Copper_deposition_during_quartz_dissolution_by_cooling_magmatic_hydrothermal_fluids_The_Bingham_porphyry"><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="110426436" 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/110426436/Fluid_Inclusion_Study_of_Epithermal_Quartz_Veins_from_the_Kyaukmyet_Prospect_Monywa_Copper_Gold_Ore_Field_Central_Myanmar">Fluid Inclusion Study of Epithermal Quartz Veins from the Kyaukmyet Prospect, Monywa Copper-Gold Ore Field, Central Myanmar</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="96421068" href="https://independent.academia.edu/ToeNaingOo">Toe Naing Oo</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of geoscience, engineering, environment and technology, 2021</p><p class="ds-related-work--abstract ds2-5-body-sm">The Kyaukmyet prospect is located near the main ore bodies of the Kyisintaung and Sabetaung high-sulfidation Cu-Au deposits, Monywa copper-gold ore field, central Myanmar. Lithologic units in the research area are of mainly rhyolite lava, lapilli tuff and silicified sandstone, mudstone and siltstone units of Magyigon Formation which hosted to be polymetallic mineralization. Our field study recorded that epithermal quartz veins are hosted largely in rhyolite lava and lapilli tuff units. Those quartz veins show crustiform, banded (colloform), lattice bladed texture and comb quartz. The main objectives of the present research in which fluid inclusion studies were considered to conduct the nature, characteristics and hydrothermal fluids evolution from the epithermal quartz veins. In this research, there are three main types of fluid inclusions are classified according to their phase relationship (1) two-phase liquid-rich inclusions, (2) the coexisting liquid-rich and vapor-rich inclusions, and (3) only vapor-rich inclusions. Microthermometric measurements of fluid inclusions yielded homogenization temperatures (Th) of 148-282 °C and final ice-melting temperature (Tm) of-0.2°C to-1.4°C. The value of (Tm) are equal to the salinities reaching up 0.35 to 2.07 wt % NaCl equiv. respectively. Estimation formation temperature of the quartz veins provide 190°C and 210°C and paleo-depth of formation are estimated to be between 130m and 210m. Petrography of fluid inclusion and microthermometric data suggest that fluid boiling as well as mixing processes were likely to be happened during the hydrothermal fluid evolution at the Kyaukmyet prospect. According to the characteristics of many parameters including petrography of fluid inclusion, microthermometric data, paleo-depth, evidence of quartz vein textures and types of hydrothermal alteration from the Kyaukmyet prospect allows to interpret these data to be the low-sulfidation epithermal system.</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 Inclusion Study of Epithermal Quartz Veins from the Kyaukmyet Prospect, Monywa Copper-Gold Ore Field, Central Myanmar","attachmentId":108247974,"attachmentType":"pdf","work_url":"https://www.academia.edu/110426436/Fluid_Inclusion_Study_of_Epithermal_Quartz_Veins_from_the_Kyaukmyet_Prospect_Monywa_Copper_Gold_Ore_Field_Central_Myanmar","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/110426436/Fluid_Inclusion_Study_of_Epithermal_Quartz_Veins_from_the_Kyaukmyet_Prospect_Monywa_Copper_Gold_Ore_Field_Central_Myanmar"><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="65694756" 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/65694756/Fossil_Versus_Active_Geothermal_Systems_Reconstructing_Fluid_Pathways_and_Building_a_Bridge_from_the_Past_to_the_Present">Fossil Versus Active Geothermal Systems: Reconstructing Fluid Pathways and Building a Bridge from the Past to the Present</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="65779821" href="https://independent.academia.edu/BrogiAndrea">Andrea Brogi</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2009</p><p class="ds-related-work--abstract ds2-5-body-sm">At Spiaggia Barbarossa on the Italian island of Elba, a hydraulic cataclastic shear zone produced by hydrothermal fluid overpressure was investigated in order to study anisotropic structures and fracture networks from macroscopic to microscopic scale. Fluid filled fractures and the degree of fracture networks that functioned as fluid pathways in a fossil hydrothermal system were also of interest. Tourmaline dykes and veins crosscut the oldest Tuscan units, the Calamita schists, parallel and oblique to the foliation and the Porto Azzurro pluton. Both metasomatic and hydrothermal tourmaline were identified in these veins. Metasomatic tourmaline exhibits reverse zoning with schoerl-rich cores and dravite-rich rims that indicate progressive replacement of biotite. Hydrothermal tourmaline forms the matrix fluid of cataclastic shear zones embedding quartz clasts within the range of ~ 100 – 2000 μm size. Fractal geometry analyses of the shear zones indicate the concentration of deformation...</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":"Fossil Versus Active Geothermal Systems: Reconstructing Fluid Pathways and Building a Bridge from the Past to the Present","attachmentId":77180097,"attachmentType":"pdf","work_url":"https://www.academia.edu/65694756/Fossil_Versus_Active_Geothermal_Systems_Reconstructing_Fluid_Pathways_and_Building_a_Bridge_from_the_Past_to_the_Present","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/65694756/Fossil_Versus_Active_Geothermal_Systems_Reconstructing_Fluid_Pathways_and_Building_a_Bridge_from_the_Past_to_the_Present"><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="65063364" 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/65063364/Sem_CL_and_La_Icp_MS_Analyses_of_Vein_Quartz_from_the_Elatsite">Sem-CL and La-Icp-MS Analyses of Vein Quartz from the Elatsite</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="51482230" href="https://bas.academia.edu/MilenKadiyski">Milen Kadiyski</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2005</p><p class="ds-related-work--abstract ds2-5-body-sm">Introduction Results from laboratory analyses of quartz from potassium feldspar-rich thin aplitic dykes from the Elatsite porphyry copper deposit are presented in this paper. Several studies have explored the aplitic dykes’ formation in many of the world-class porphyry copper deposits (Heithersay, Walsh, 1995, etc.). The presence of the so-called “vein dykes” is assumed to be one of the most illustrative evidences for coeval processes of magmatism, hydrothermal activity and mineralization. Thin hydrothermal veinlets with prismatic quartz in the margins and a central infill of aplitic material, consisting of quartz and potassium feldspar are characteristic for those aplitic dykes. The aim of this study is to present more detailed spatial and mineralogical description of aplitic veins in the Elatsite porphyry Cu-Au deposit. That includes unraveling the genesis of composite quartz-feldspar (q-fs) veins and their relationship with the main ore stages at Elatsite. Scanning electron micro...</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":"Sem-CL and La-Icp-MS Analyses of Vein Quartz from the Elatsite","attachmentId":76813400,"attachmentType":"pdf","work_url":"https://www.academia.edu/65063364/Sem_CL_and_La_Icp_MS_Analyses_of_Vein_Quartz_from_the_Elatsite","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/65063364/Sem_CL_and_La_Icp_MS_Analyses_of_Vein_Quartz_from_the_Elatsite"><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="31048552" 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/31048552/Micro_Fourier_Transform_Infrared_FT_IR_and_%CE%B4D_value_investigation_of_hydrothermal_vein_quartz_Interpretation_of_fluid_inclusion_%CE%B4D_values_in_hydrothermal_systems">Micro-Fourier Transform Infrared (FT-IR) and δD value investigation of hydrothermal vein quartz: Interpretation of fluid inclusion δD values in hydrothermal 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="32058050" href="https://glasgow.academia.edu/AdrianBoyce">Adrian J Boyce</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Geochimica et Cosmochimica Acta, 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":"Micro-Fourier Transform Infrared (FT-IR) and δD value investigation of hydrothermal vein quartz: Interpretation of fluid inclusion δD values in hydrothermal systems","attachmentId":51481999,"attachmentType":"pdf","work_url":"https://www.academia.edu/31048552/Micro_Fourier_Transform_Infrared_FT_IR_and_%CE%B4D_value_investigation_of_hydrothermal_vein_quartz_Interpretation_of_fluid_inclusion_%CE%B4D_values_in_hydrothermal_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/31048552/Micro_Fourier_Transform_Infrared_FT_IR_and_%CE%B4D_value_investigation_of_hydrothermal_vein_quartz_Interpretation_of_fluid_inclusion_%CE%B4D_values_in_hydrothermal_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="23249684" 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/23249684/REINTERPRETATION_OF_QUARTZ_TEXTURES_IN_TERMS_OF_HYDROTHERMAL_FLUID_EVOLUTION_AT_THE_KORYU_Au_Ag_DEPOSIT_JAPAN">REINTERPRETATION OF QUARTZ TEXTURES IN TERMS OF HYDROTHERMAL FLUID EVOLUTION AT THE KORYU Au Ag DEPOSIT JAPAN</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="45113583" href="https://independent.academia.edu/GustavoRamirez70">Gustavo Ramirez</a></div><p class="ds-related-work--abstract ds2-5-body-sm">Spatial and temporal variations in quartz textures and the types of quartz-hosted fluid inclusions in the no. 3 vein of the Pleistocene Koryu epithermal Au-Ag deposit were studied. Bonanza-grade ore zones contain multiple generations of quartz with six distinct textures—crustiform, comb, microcrystalline, colloform, cockade, and platy. Early-formed parts of the vein are mainly composed of comb quartz that is overgrown by later quartz with a variety of textures, including comb, microcrystalline, and colloform; the latter two are the most common textures of later parts of the vein. Comb, microcrystalline, and colloform textures can be traced along each mineral band at the scale of the ore deposit, suggesting the existence of uniform silica-supersaturated conditions during the deposition of the band. Interpretation of petrographic features of fluid inclusions in quartz at the same mine level reveals three types of fluid conditions—intense boiling (flashing), gentle boiling, and nonboiling conditions. The presence of comb quartz texture corresponds to fluid inclusion evidence for gentle boiling or nonboiling conditions. The presence of microcrystalline and colloform quartz textures indicates intense boiling, as suggested in previous studies, although the secondary fluid inclusions in earlier-formed quartz only correspond to fluid inclusion evidence for intense boiling. A fluid inclusion microthermometric study using fluid inclusion assemblages in comb quartz trapped under both gentle boiling and nonboiling conditions shows hydrothermal temperature fluctuates mostly between 243° and 268°C. The relationship between boiling conditions and quartz textures suggests that the intensity of boiling of silica-supersaturated hydrothermal fluid fluctuates at a given depth over time. The close association between precious metal content and microcrystalline and colloform quartz supports the idea that the metals precipitated due to intense boiling. Intense boiling at the base of the boiling zone likely was the main mechanism for bonanza precious metal precipitation, whereas physical transportation of the metals by gently boiling fluids was only a minor mechanism for local precipitation of precious metals at Koryu. On the basis of the observations of this study and previous paleodepth data, quartz textures are overprinted; a deep assemblage of the early comb quartz, formed at >500-m depth below the paleowater table, was over-printed by a late microcrystalline and colloform quartz assemblage formed at <500-m depth. Such textural variations may be attributed to a decrease in the depth of the water table caused by nearby volcanic eruptions.</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":"REINTERPRETATION OF QUARTZ TEXTURES IN TERMS OF HYDROTHERMAL FLUID EVOLUTION AT THE KORYU Au Ag DEPOSIT JAPAN","attachmentId":43729972,"attachmentType":"pdf","work_url":"https://www.academia.edu/23249684/REINTERPRETATION_OF_QUARTZ_TEXTURES_IN_TERMS_OF_HYDROTHERMAL_FLUID_EVOLUTION_AT_THE_KORYU_Au_Ag_DEPOSIT_JAPAN","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/23249684/REINTERPRETATION_OF_QUARTZ_TEXTURES_IN_TERMS_OF_HYDROTHERMAL_FLUID_EVOLUTION_AT_THE_KORYU_Au_Ag_DEPOSIT_JAPAN"><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":111293116,"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":111293116,"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_111293116" 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. 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