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  2. 地质与地球物理研究所
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  4. 中国科学院矿产资源研究重点实验室
Mineral chemistry of chlorite in different geologic environments and its implications for porphyry Cu ? Au ? Mo deposits

文献类型：期刊论文

作者Li, Changhao2,3; Shen, Ping2,3,4; Zhao, Yong5; Li, Pei6; Zhang, Lejun7; Pan, Hongdi1
刊名ORE GEOLOGY REVIEWS
出版日期2022-10-01
卷号149页码:15
关键词Major elements Machine learning Redox state Formation temperature Hydrothermal fluid
ISSN号0169-1368
DOI10.1016/j.oregeorev.2022.105112
英文摘要In the porphyry Cu +/- Au +/- Mo deposits (PCDs), chlorite and its mineral assemblages are indicators for exploration. However, chlorite found in PCDs may have different origins because it is a common mineral in different geological environments. Therefore, it is necessary to identify the differences in the composition of PCDs-related chlorites (chloritePCDs) and chlorite formed in other geological environments (chloriteBarren). Here, based on occurrences, mineral assemblages, and compositions of the chlorites from thirty PCDs and barren areas (including geothermal systems, chloriteGSs; low-grade metamorphic rocks, chloriteLGMRs; sedimentary rocks, chloriteSRs), we used principal component analysis (PCA) and random forest (RF) methods to find discrimination approaches. Results show that chloritePCDs and chloriteBarren differ in the Fe, Mg, Al, Ti, and possibly Mn, K, and Ca elements. Based on these differences, wt.% ratios of (MgO + 100*TiO2)/(FeO + 100*CaO), TiO2/(CaO + K2O + Na2O), Al2O3/(100*K2O*CaO), MgO/(100*CaO*Na2O), SiO2/100(CaO + K2O), and FeO/100TiO2 and diagrams of Fe/(Fe + Mg) (a.p.f.u. ratio) vs TiO2/(Na2O + K2O + CaO) (wt.% ratio), Fe/(Fe + Mg) (a.p.f.u. ratio) vs MgO/(100*Na2O*CaO) (wt.% ratio), and Fe/(Fe + Mg) (a.p.f.u. ratio) vs SiO2/Al2O3 (wt.% ratio) are proposed to distinguish chloritePCDs from chloriteBarren. These discrimination approaches have better results in distinguishing chloritePCDs from chloriteLGMRs and chloriteSRs but are less effective for chloriteGSs. By comparing the physicochemical conditions, the highly oxidized conditions and high temperature of the ore-related intrusions and fluid properties result in the compositional differences between chloritePCDs and chloriteBarren. Although further researches remain to be done, this study provides potential approaches for identifying chloritePCDs based on major elements.
WOS关键词BARBERTON GREENSTONE-BELT ; LOW-GRADE METAMORPHISM ; PORE-LINING CHLORITE ; HYDROTHERMAL ALTERATION ; CHEMICAL-COMPOSITION ; OXYGEN FUGACITY ; SOLID-SOLUTION ; CENTRAL-ASIA ; WHITE MICA ; TEMPERATURE
资助项目International Partnership Program of Chinese Academy of Sciences[132A11KYSB20190070] ; National Natural Science Foundation of China[42002092] ; National Key Research and Development Program[2021YFE0190600] ; Science and Technology Development Fund, Macau SAR[0002/2019/APD] ; China Postdoctoral Science Foundation[2019M660787]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000869028800002
出版者ELSEVIER
资助机构International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; Science and Technology Development Fund, Macau SAR ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/107780]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Shen, Ping
作者单位1.Changan Univ, Coll Earth Sci, Xian 710054, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Ave Wai Long, Macau 999078, Peoples R China
6.China Earthquake Disaster Prevent Ctr, Beijing 100029, Peoples R China
7.Univ Tasmania, Ctr Ore Deposit & Earth Sci CODES, Private Bag 79, Hobart, Tas 7001, Australia
推荐引用方式
GB/T 7714		 Li, Changhao,Shen, Ping,Zhao, Yong,et al. Mineral chemistry of chlorite in different geologic environments and its implications for porphyry Cu ? Au ? Mo deposits[J]. ORE GEOLOGY REVIEWS,2022,149:15.
APA Li, Changhao,Shen, Ping,Zhao, Yong,Li, Pei,Zhang, Lejun,&Pan, Hongdi.(2022).Mineral chemistry of chlorite in different geologic environments and its implications for porphyry Cu ? Au ? Mo deposits.ORE GEOLOGY REVIEWS,149,15.
MLA Li, Changhao,et al."Mineral chemistry of chlorite in different geologic environments and its implications for porphyry Cu ? Au ? Mo deposits".ORE GEOLOGY REVIEWS 149(2022):15.

入库方式： OAI收割

来源：地质与地球物理研究所

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