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تشنغتشو ، الصين

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iron granites gold

Characteristic of gold mineralization associated with granites

Hamash gold mine is considered one of the pharaohs mines in the South Eastern Desert of Egypt, where gold mineralization is hosted by granites. In this study, Abstract The West Qinling orogen in central China, formed from continental collision between the North China and Yangtze cratons in the Late Triassic, An Early Cretaceous gold mineralization event in the Triassic

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Magnetite as an indicator of granite fertility and gold

The mantle under the gold field shows metasomatic or juvenile “EM2” or “EM2 + EM1” characteristics. The gold deposits are closely associated with craton Review on Orogenic Gold Deposits. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China. 摘要: 造山型金矿指与大洋板块俯冲造山型金矿研究进展:兼论中国造山型金成矿作用

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LA-ICP-MS zircon U-Pb dating of granite porphyry and

Ore Geology Reviews Volume 148, September 2022, 105027 LA-ICP-MS zircon U-Pb dating of granite porphyry and 40 Ar/39 Ar dating of chromian sericite of the High-K granites dominate the rock units in the Bakoshi and Gadanya areas located in the northwestern Nigerian subshield, part of the Trans-Saharan Belt, West Genesis and magma fertility of gold associated high-K granites

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Genesis and magma fertility of gold associated high-K

Abstract High-K granites dominate the rock units in the Bakoshi and Gadanya areas located in the northwestern Nigerian subshield, part of the Trans Tourmaline from 18 orogenic gold deposits and districts, hosted in varied country rocks and metamorphic facies, was investigated by EPMA (electron probe micro Chemical composition of tourmaline in orogenic gold deposits

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Geochemistry and tectonic significance of late

The ca. 1.6 billion years old LWZ and Maping A-type granites belong to group A 1 and group A 2 (Fig. 12a,b) and show an affinity to within-plate granites in the tectonic discrimination plots (FigThe ore deposits of The Granites goldfield are shear-hosted within Palaeoproterozoic amphibolite facies metasedimentary rocks in the Tanami Region, Northern Territory, Australia. The ore bodies are located within a 5- to 35-m thick sequence of steeply dipping unit of metamorphosed iron-rich metasedimentary rocks. Deformation The Granites gold deposits, Northern Territory, Australia

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Mixed messages in iron oxide–copper–gold systems of the

Proterozoic rocks of the Cloncurry district in NW Queensland, Australia, are host to giant (tens to hundreds of square kilometers) hydrothermal systems that include (1) barren regional sodic–calcic alteration, (2) granite-hosted hydrothermal complexes with magmatic–hydrothermal transition features, and (3) iron oxide–copper–gold (IOCG) Although the role of granites in gold mineralisation is under discussion (Powell et al., 1991; Phillips and Zhou, 1999; Mhlanga, 2002) in this case, the hydrothermal fluids and the structures(PDF) Gold-only Deposits and Archean Granite

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LA-ICP-MS zircon U-Pb dating of granite porphyry and

40 Ar/ 39 Ar ages of chromian sericite in Shuangqishan and Xiaoban gold deposits are (146.21 ± 1.59 Ma) and (149.28 ± 1.26 Ma) respectively.. The gold mineralization is related to the late stage of Late Jurassic (ca. 153–146 Ma) magmatism. • The granite porphyry, chromian sericite, and Cr elements anomaly are the significant 2.4 Iron oxide copper-gold mineral system; In many cases the granites and pegmatites are localised along deep fault systems that can coincide with major metamorphic and tectonic boundaries (Hart, 2007). 2004). Intrusion-related gold deposits are spatially associated with moderately reduced granites of felsic to intermediate 2.3 Granite-related mineral system Geoscience Australia

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朱永峰-北京大学地球与空间科学学院 pku.edu.cn

目前主持的科研项目：. 新疆萨尔托海石英菱镁岩及相关金矿成因研究 (No.41372062，NSFC)；. 新疆萨尔托海豆荚状铬铁矿矿床成因及其变质改造工程研究（No. 41672047，NSFC)。. 环巴尔喀什-西准噶尔大型矿集区预测合作研究 (2010DFB23390，国家国际科技合作重点项目)；该The Jiabusi multiphase granites dominated by batholiths intruded into the Late Jurassic volcanic rocks and were controlled by the NE-trending fault zones (Fig. 2 A). The outcrops of the multiphase granites are mainly composed of fine-grained quartz diorite and medium- to coarse-grained BG, which is intruded by LAG and TMG plutons (Fig. 2 AGeochronology and geochemistry of the granites from the

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On Granites Springer

A-type granites are Fe-rich, anhydrous and contain relatively high concentrations of halides, Zr and the REE. The high concentrations of halides (e.g. Cl, F) and trace elements makes A-type granites of particular economic interest and they are commonly associated with Iron oxide copper -gold deposits (e.g. Olympic Dam in The most of gold deposits are produced in subduction and collision setting by fluxes of hydrothermal fluids through crustal rocks. The main types of hydrothermal gold deposits are iron-oxide copper-gold (IOCG) deposits, porphyry deposits, and low- and high-sulfidation epithermal deposits as a co-product, Carlin-type gold, and orogenic gold Characteristic of gold mineralization associated with granites

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Spatial and temporal zoning of hydrothermal alteration and

The Sossego iron oxide–copper–gold deposit (245 Mt @ 1.1% Cu, 0.28 g/t Au) in the Carajás Mineral Province of Brazil consists of two major groups of orebodies (Pista–Sequeirinho–Baiano and Sossego–Curral) with distinct alteration assemblages that are separated from each other by a major high angle fault. The deposit is located along a 个人简介. 李欢，男，汉族，中南大学地质资源系教授，中国地质大学（武汉）兼职教授，博士生导师，湖南省浏阳市人。. 2008年、2011年分别获中南大学工学学士（地质工程矿产勘查方向）、硕士（矿产普查与勘探）学位；2014获日本九州大学博士学中南大学李欢

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(PDF) Solid Mineral Deposits and Mining in

The solid minerals and mining sector contributed a paltry 0.5% to the Gross Domestic Product (GDP) in 2018, with annual production averaging 40 million metric tons valued at about 34 billion nairaThis study uses selected granite samples to evaluate the effect of redox conditions expressed as molar ferric-ferrous iron oxide ratio, Fe 3+ # [=Fe 2 O 3 /(FeO + Fe 2 O 3)], on estimation of crystallization pressure (P) of granites using the Qtz-geobarometer.The results indicate that calculated P decreases significantly with Ferric-ferrous iron oxide ratios: Effect on ScienceDirect

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Ferric-ferrous iron oxide ratios: Effect on ResearchGate

The granites also preserve an alkali-calcic alteration that together with inferred ƒO2 makes them more prospective for a variety of intrusion-related styles of mineralization including iron-oxideMetallogenic model of the Wulong gold district, China, and associated assessment of exploration criteria based on multi-scale geoscience datasets 王庆飞赵鹤森 Mineralium Deposita 3.37 A rare Phanerozoic amphibolite 地球科学与资源学院

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(PDF) Solid Mineral Deposits and Mining in Nigeria: -A

minera ls, or es of lead-zinc, iron, gold, and barit e, limesto ne, coal and bitume n as “strategic” minerals/metals for prio rity development. Lead-Zi nc. o res a re u sually found togethe r as.南岭是我国花岗岩研究程度最高的地区。特别是由于这一地区花岗岩与钨、锡、铌、钽、锆、铪、铜、钼、铅、锌、银、铋、锑、铀、锂、铍、稀土等金属成矿作用关系密切而受到国内外学术界关注。一般认为，南岭花岗岩及相关的成矿作用与花岗岩浆的高度结晶分异作用有关，但高分异作用发生的南岭高分异花岗岩成岩与成矿

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The Basement Complex SpringerLink

The basement complex is one of the three major litho-petrological components that make up the geology of Nigeria (Fig. 1.1).The Nigerian basement complex forms a part of the Pan-African mobile belt and lies between the West African and Congo Cratons (Fig. 1.2) and south of the Tuareg Shield (Black, 1980).It is intruded by the The vast majority of orogenic gold (excluding Witwatersrand, South Africa) is from three periods in geologic time: the Neoarchean (ca. 2700-2400 Ma), a second period in the Paleoproterozoic (ca. 2100-1800 Ma), and a third period from ca. 650 Ma continuing throughout the Phanerozoic ( Goldfarb et al., 2001 ). Two explanations have been offeredOn the source of orogenic gold Geology GeoScienceWorld

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李伟强 NJU

李伟强. 教育与工作背景. 2014年11月－至今，南京大学地球科学与工程学院教授. 2012年12月－2014年10月，美国威斯康辛大学麦迪逊分校地球科学系，助理研究科学家. 2009年6 月－2012年11月，美国威斯康辛大学麦迪逊分校地球科学系，博士后. 2006年1 月－2009年 5月

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