Origin of quartz vein type calcite ore deposit

Textural evolution and trace element chemistry of

2019年9月1日  Based on field relationships and the ore and gangue mineral assemblages, three major hydrothermal vein generations have been recognized in the Pampalo deposit 2023年9月12日  Welldeveloped pyrite crystals can be found in quartz and calcite micro veins Chalcopyrite (CuFeS 2) occurs as dissemination and cavity filling in quartzcalcite microveins The geochemistry, origin, and hydrothermal alteration 2024年3月1日  This study delves into the multifaceted history of mineralization at the Tongshanling deposit, providing a fresh perspective on the origin and evolutionary Evolution of skarn to quartzvein mineralization: Insights 2013年7月24日  Goldbearing disseminated ores are associated with the earlier stage of NWWtrending ductile zone, and auriferous quartz veintype ores show an intimate relationship with the later stage of NEtrending brittleductile Geology, fluid inclusion, and isotope constraints

Geology, fluid inclusions, HO isotope, and hydrothermal

2020年3月19日  Systematic fluid inclusion investigation shows that CO2H2O threephase inclusions are the dominant type of fluid inclusions in the auriferous quartz veins, suggesting 2015年3月13日  Extensive quartz–carbonate–Cu sulfide veins occur in clastic rocks and are spatially related to Paleocene granites in the western border of the Lanping Basin, western Yunnan, China Abundant aqueouscarbonic fluid Fluid inclusion and isotopic constraints on the 2022年8月24日  Hydrothermal quartz veins from the Butte deposit display euhedral and mottled cathodoluminescent (CL) textures that reflect the growth and deformation history of quartz Quartz Vein Formation and Deformation during Porphyry Cu Deposit 2022年4月21日  The Baishitouwa deposit is a mediumscale quartz–wolframite veintype deposit in the southern Great Xing’an Range tungsten (W) belt The W mineralization occurs mainly as veins and dissemination within the mica schist Ore Genesis of the Baishitouwa

Origins of oreforming fluid and material of the quartz–vein type

2018年2月1日  On the basis of analytical results of fluid inclusions and stable isotopes (HOCS) of the Qianfanling Mo deposit, a representative quartz–vein type Mo deposit, Gao et al (2013) 2019年9月1日  Orogenic gold deposits are structurally controlled and typically hosted by second and thirdorder structures where they form quartz dominated hydrothermal vein systems that carry native gold, sulfides (pyrite, pyrrhotite, arsenopyrite and chalcopyrite), carbonates (calcite, ankerite and siderite), tourmalines and tellurides as minor mineral phases (eg Groves et al, Textural evolution and trace element chemistry of 2024年6月6日  The Middle Atlas hosts calcite veins of considerable economic value, being found in the Mahdi and Bou Naceur ridges in the eastern part of the Moroccan Middle Atlas In this study, we aim to identify the fundamental Identification, Characterization, and Deposit 2022年9月30日  In addition, it is important to note that the type of rock which is generally green schist, hydrothermal alteration, ore mineral assemblages and quartz veins hosted in metamorphic rock found in The Quartz Veins, Hydrothermal Alteration and

Geology, fluid inclusion, and isotope constraints on ore

2013年7月24日  The quartz veintype ore is associated with strong lateral alteration zonation The following is listed from the center of the shear zone to the outside: (i) a goldbearing quartz–sericite–pyrite zone that occurs in the proximal zone, (ii) a chlorite–calcite–quartz zone in the outer shear zone, and (iii) a zone of unaltered wall rocks 2017年4月1日  The Xitian W–Sn polymetallic district is one of the most significant finds of tungsten–tin mineral resources in the Nanling area (W–Sn reserves ⩾ 30 × 10 4 t; Wu et al, 2011)Previous studies have considered skarn orebodies to be the dominant mineralization type of the Xitian District (Wu et al, 2004, Wu et al, 2009, Wu et al, 2011, Xu et al, 2006, Zeng et Oreforming mechanism of quartzveintype WSn deposits 2022年11月22日  Orogenic gold deposits, though construed to focused fluid flow during orogenesis, commonly postdate the main accretionary events Several lines of evidence indicate that orogenic gold formation in the Arabian–Nubian Shield continued through the orogen collapse stage and associated rapid exhumation and thermal reequilibration The Gidami gold deposit Veintype gold formation during late extensional collapse of 2021年1月1日  Quartz, the major constituent of most of the veinlets, is a ubiquitous gangue mineral It can form from fluids of multiple origins and variable compositions under a wide range of temperature and pressure conditions, and thus records systematic information of ore formation (Seedorff et al, 2005, Rusk et al, 2006, Yang et al, 2015, Denget al, 2020)Identifying hydrothermal quartz vein generations in the

Quartz Vein Formation and Deformation during Porphyry Cu Deposit

2022年8月24日  The 65 Ma Butte porphyry CuMo deposit provides an ideal study site because it has been thoroughly studied for more than 100 years [] and because it is hosted by the homogeneous Butte Granite (Figure 1(a)) [6, 7], which eliminates geochemical and structural complexities caused by heterogeneous country rockThe veins and vein envelopes are well 2023年11月1日  Multiple generations of calcite have been identified in the Weishan REE deposit (Wang et al, 2019), which show coexistence with different minerals such as Kfeldspar, quartz, sulfates, carbonates, fluorides and sulfidesFluid inclusions in the coexistent quartz have homogenization temperatures varying widely from ∼ 550℃ to ∼ 150℃ (Li et al, 2009, Lan et Origin and mineralization processes of REE during magmatic 2013年9月22日  Graphite deposits result from the metamorphism of sedimentary rocks rich in carbonaceous matter or from precipitation from carbonbearing fluids (or melts) The latter process forms vein deposits which are structurally controlled and usually occur in granulites or igneous rocks The origin of carbon, the mechanisms of transport, and the factors controlling Vein graphite deposits: geological settings, origin, and 2024年7月20日  Most vein deposits occur in fault or fissure openings or in shear zones within country rock A vein deposit is sometimes referred to as a (metalliferous) lode deposit A great many valuable ore minerals, such as VEIN DEPOSITS Earth Sci

Origin and evolution of ore fluid, and golddeposition

2016年1月1日  Petrographical, microthermometric, and laser Raman spectroscopic studies on fluidinclusion assemblages in quartz and calcite from the four stages reveal three types of primary fluid inclusions: type 1 H 2 Orich aqueouscarbonic, type 2 CO 2rich aqueouscarbonic, and rare type 3 carbonic inclusionsStage 1 quartz primary inclusions are only type 1 2006年7月1日  Two types of fluid inclusions, namely H 2 O–NaCl and H 2 O–CO 2 (± CH 4 /N 2)–NaCl types, have been recognized in quartz, barite and calciteHomogenization temperatures of fluid inclusions vary from 159 to 390 °C, with T h during the main stage of gold mineralization ranging from 200 to 340 °C Salinity ranges from 24 to 462 wt% NaCl equiv Ore fluid Geology and geochemistry of the Bulong quartz–barite veintype 2023年7月15日  The Gongguan deposit in southern Qinling district, central China, is characterized by a Hg and Sb metal association, with proven reserves of 7,543 t Hg and 17,100 t Sb The HgSb mineralized veins are primarily hosted by local Lower Devonian dolomite Three primary paragenetic stages have been identified, including (I) pyritedolomitequartz, (II) Fluid inclusion and H–OSPb isotope constraints on the origin 2022年10月1日  Stage Ⅳ is the final stage of the hydrothermal activity at the Narenwula W polymetallic deposit This stage comprises mainly calcite and quartz, together with minor granite (135 Ma) and quartzvein type ore bodies (1368–1347 Ma) in the Daolundaba CuWSn ore To identify the primary origin of the oreforming fluid and Ore genesis of the Narenwula quartzvein type W polymetallic deposit

Mineralogical, textural, sulfur and lead isotope constraints

2018年4月7日  The Bianjiadayuan AgPbZn deposit (481 Mt @1574 g/t Ag and 394% Pb + Zn) is located in the Great Hinggan Range PbZnAgCuMoSnFe polymetallic metallogenic belt, NE China Vein type PbZnAg ore bodies are primarily hosted by slate, adjacent to a Sn ± Cu ± Mo mineralized porphyry intrusion The deposit is characterized by silverrich ores with Ag 2022年7月27日  Fluid inclusion analyses Petrographic observation and microthermometric measurements have been applied to goldbearing vein quartz sample LT1912Qz from the Liaotun Carlintype gold depositProgressive crushing 40Ar/39Ar dating of a goldbearing quartz vein 2017年6月1日  The combined evidence of HCOPb isotopic composition, which record a magmatic hydrothermal character, the relatively higher indium concentrations in bulk ore and sphalerite compared to MVT deposits, as well as veinlike, faultbounded mineralization, suggests a magmatic hydrothermal origin of the polymetallic veintype depositsGeochemical and isotopic evidence for a magmatichydrothermal origin 2023年8月1日  This contribution presents new insights into the origin and age relationships of the Geyer tin deposit in the Erzgebirge, Germany Tin mineralization occurs in skarns, greisen, and in cassiteritebearing fluoritequartz veins Skarn alteration replaces marble layers of the Cambrian Jáchymov Group and occurs in two clearly distinct stages The first skarn stage forms skarnoid Timing and origin of skarn, greisen, and veinhosted tin

Machine learning coupled with mineral geochemistry reveals the origin

2022年3月1日  Gregory et al, 2019, Zhong et al, 2021 used pyrite trace element compositions obtained by LA–ICP–MS and supervised learning algorithms, such as random forest, artificial neural network (ANN), and support vector machine (SVM), to distinguish different types of ore deposits, demonstrating that MLbased classifiers for pyrite trace element data are valid 2020年3月19日  The Daqingshan gold deposit, located in the Beishan orogenic belt, northwestern China, is hosted in a Carboniferous greenschist facies metavolcanicsedimentary sequence Three periods of metamorphic and deformational events were recognized, corresponding with the three types of quartz veins in the deposit area Quartz veins formed in Geology, fluid inclusions, HO isotope, and hydrothermal2020年12月8日  Ore veins are mainly hosted in lowgrade metamorphosed quartz sandstone, slate and granitic rocks The ore minerals mainly comprise wolframite, cassiterite, scheelite and pyrite, with minor molybdenite, Ore‐forming Fluid and Metallogenic Mechanism 2006年7月1日  The pure barite vein is in the centre and quartz veins or baritequartz veins in the lower and upper parts of the compound veins The gold orebodies mainly occur as quartz veins and quartzbarite Geology and geochemistry of the Bulong quartz–barite veintype

中南大学 刘飚

2022年12月9日  个人简介 刘飚，工学博士，博士后，硕士生导师，地质工程系副主任。主要从事国家“一带一路”稀有金属 （ Li/Cs/ W/Sn） 与稀贵金属（Au/Ag / Pt）成矿理论与高效智能勘查研究，研究方向包括：(1)新能源锂铯铍成矿理论与成矿规律；(2)复杂地质体三维建模与模拟；(3)古地质流体磁学示踪与模拟；(4 2016年8月1日  It was established, for the first time, that all of the studied deposits are similar geologically but differ in mineralogical diversity of orebearing quartz veins, which is due to the different Mineralization and REE geochemistry of hydrothermal quartz and calcite 2019年3月21日  The Sizhuang gold deposit with a proven gold resource of >120 t, located in northwest Jiaodong Peninsula in China, lies in the southern part of the Jiaojia gold belt Gold mineralization can be divided into altered rock type, auriferous quartz vein type, and sulfidequartz veinlet in Kfeldspar altered granite According to mineral paragenesis and mineral OreFluid Evolution of the Sizhuang Orogenic Gold Deposit 2017年3月1日  These veintype deposits share common geological characteristics: (1) The veins are composed of sphalerite, galena, chalcopyrite, and pyrite in a gangue of quartz with minor calcite; (2) The veins Geochemical and isotopic evidence for a magmatichydrothermal origin

Fluid Inclusions and H–O–C–S–Pb Isotopic Frontiers

2021年2月21日  FIGURE 3Photographs of ore and mineral assemblages from the Jinba gold deposit (A) Disseminated pyrite occurring in the diorite with silicification; (B) Quartz–pyrite–gold vein in diorite; (C) Quartz vein–type mineralization in sericite phyllite; (D, E) Quartz–chalcopyrite–pyrite vein in diorite; (F) Calcite–galena–pyrite vein in the diorite with 2015年9月1日  On the contrary, the quartz and pyrite from the quartzvein type gold deposits yield δ⁷Li values of 94‰ ∼336‰ and 05‰ ∼24‰, respectively, which are different from that of the Origin and evolution of ore fluid, and golddeposition 2019年9月1日  Orogenic gold deposits are structurally controlled and typically hosted by second and thirdorder structures where they form quartz dominated hydrothermal vein systems that carry native gold, sulfides (pyrite, pyrrhotite, arsenopyrite and chalcopyrite), carbonates (calcite, ankerite and siderite), tourmalines and tellurides as minor mineral phases (eg Groves et al, Textural evolution and trace element chemistry of 2024年6月6日  The Middle Atlas hosts calcite veins of considerable economic value, being found in the Mahdi and Bou Naceur ridges in the eastern part of the Moroccan Middle Atlas In this study, we aim to identify the fundamental Identification, Characterization, and Deposit

The Quartz Veins, Hydrothermal Alteration and

2022年9月30日  In addition, it is important to note that the type of rock which is generally green schist, hydrothermal alteration, ore mineral assemblages and quartz veins hosted in metamorphic rock found in 2013年7月24日  The quartz veintype ore is associated with strong lateral alteration zonation The following is listed from the center of the shear zone to the outside: (i) a goldbearing quartz–sericite–pyrite zone that occurs in the proximal zone, (ii) a chlorite–calcite–quartz zone in the outer shear zone, and (iii) a zone of unaltered wall rocks Geology, fluid inclusion, and isotope constraints on ore 2017年4月1日  The Xitian W–Sn polymetallic district is one of the most significant finds of tungsten–tin mineral resources in the Nanling area (W–Sn reserves ⩾ 30 × 10 4 t; Wu et al, 2011)Previous studies have considered skarn orebodies to be the dominant mineralization type of the Xitian District (Wu et al, 2004, Wu et al, 2009, Wu et al, 2011, Xu et al, 2006, Zeng et Oreforming mechanism of quartzveintype WSn deposits 2022年11月22日  Orogenic gold deposits, though construed to focused fluid flow during orogenesis, commonly postdate the main accretionary events Several lines of evidence indicate that orogenic gold formation in the Arabian–Nubian Shield continued through the orogen collapse stage and associated rapid exhumation and thermal reequilibration The Gidami gold deposit Veintype gold formation during late extensional collapse of

Identifying hydrothermal quartz vein generations in the

2021年1月1日  Quartz, the major constituent of most of the veinlets, is a ubiquitous gangue mineral It can form from fluids of multiple origins and variable compositions under a wide range of temperature and pressure conditions, and thus records systematic information of ore formation (Seedorff et al, 2005, Rusk et al, 2006, Yang et al, 2015, Denget al, 2020)2022年8月24日  The 65 Ma Butte porphyry CuMo deposit provides an ideal study site because it has been thoroughly studied for more than 100 years [] and because it is hosted by the homogeneous Butte Granite (Figure 1(a)) [6, 7], which eliminates geochemical and structural complexities caused by heterogeneous country rockThe veins and vein envelopes are well Quartz Vein Formation and Deformation during Porphyry Cu Deposit 2023年11月1日  Multiple generations of calcite have been identified in the Weishan REE deposit (Wang et al, 2019), which show coexistence with different minerals such as Kfeldspar, quartz, sulfates, carbonates, fluorides and sulfidesFluid inclusions in the coexistent quartz have homogenization temperatures varying widely from ∼ 550℃ to ∼ 150℃ (Li et al, 2009, Lan et Origin and mineralization processes of REE during magmatic 2013年9月22日  Graphite deposits result from the metamorphism of sedimentary rocks rich in carbonaceous matter or from precipitation from carbonbearing fluids (or melts) The latter process forms vein deposits which are structurally controlled and usually occur in granulites or igneous rocks The origin of carbon, the mechanisms of transport, and the factors controlling Vein graphite deposits: geological settings, origin, and

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