The Yangla Cu deposit is the largest ore deposit in the Jinshajiang polymetallic metallogenic belt,northwest Yunnan,China.There is no consensus on the genesis of the ore deposit owing to the limited studies on the che...The Yangla Cu deposit is the largest ore deposit in the Jinshajiang polymetallic metallogenic belt,northwest Yunnan,China.There is no consensus on the genesis of the ore deposit owing to the limited studies on the chemical compositions of sulfides.This study used an electron probe micro-analyzer to constrain the chemical compositions of pyrite,chalcopyrite,molybdenite,and sphalerite in the porphyry Cu ore of the Yangla Cu deposit and compared them with the chemical compositions of sulfides in the skarn Cu ore.The trace element contents and their occurrences were used to estimate the metallogenic temperature and infer the genesis of the Yangla deposit.The results show that the sulfides in the porphyry Cu ores have variations of ore element concentrations relative to their theoretical values.Pyrite is depleted in S but elevated in Fe;chalcopyrite is depleted in Cu,Fe,and S;and molybdenite and sphalerite are enriched in S whilst depleted in Mo and Zn.The concentrations of the main metallogenic elements Cu,Fe,Mo,Zn,and S in the porphyry are generally lower than those in skarn,suggesting that the porphyry ore was formed in a moderate to moderate-high temperature metallogenic environment.The formation time may also be slightly later than that of the skarn Cu ore.Elements such as As,Co,Cu.Pb,Zn,Mo,Cd,and Ni mainly exist as isomorphic replacements and mineral inclusions in the sulfides of both porphyry and skarn Cu ores.The trace element features of sulfides in the two ore bodies show that the Yangla Cu deposit may be a composite super imposed ore deposit,and让s formation has undergone the process of exhalative-sedimentary to skarnporphyry mineralization.展开更多
采用文献计量法对Web of Science(WOS)核心合集和中国知网(CNKI)中1990—2022年数据库有关酿酒葡萄成熟度文献进行可视化分析。结果表明,研究酿酒葡萄成熟度领域的国家主要为西班牙125次、意大利97次、美国93次,国际上University of Ade...采用文献计量法对Web of Science(WOS)核心合集和中国知网(CNKI)中1990—2022年数据库有关酿酒葡萄成熟度文献进行可视化分析。结果表明,研究酿酒葡萄成熟度领域的国家主要为西班牙125次、意大利97次、美国93次,国际上University of Adelaide、French National Agriculture Research Institute、University of California是目前领域中最为重要和关键的机构,各机构合作关系较为紧密。国内西北农林科技大学和宁夏大学保持较高发文量,但合作较少,应多加强合作。研究热点主要集中在“酿酒葡萄”“果实品质”“成熟度”“采收期”“气候”“温度”“颜色”等关键词,报道了光照、温度、水肥、气候、采收期等对酿酒葡萄及葡萄酒感官品质、理化指标、酚类物质的影响。展开更多
基金jointly by the National Natural Science Foundation of China(41862007 and 41402072)Yunnan Ten Thousand Talents Plan Young&Elite Talents Project(No.YNWR-QNBJ-2018-093)+2 种基金the Key Disciplines Construction of Kunming University of Science and Technology(No.14078384)the Analysis and Testing Foundation of Kunming University of Science and Technology(2017T20160006)We are grateful to Dr.Jianping Liu,Dr.Weikang Chen,and Dr.Shaoqing Liu(School of Geosciences and Info-physics,Central South University)for sulfides EPMA analyses:and Dr.Yuedong Liu,Dr.Cheng Luo.Dr.Xiaoqing Liu and Dr.Zaizao Li(Yunnan Diqin Mining Industry Group)for their field work.The authors would also like to thank anonymous reviewers for their useful comments and constructive reviews,which significantly improved the manuscript.
文摘The Yangla Cu deposit is the largest ore deposit in the Jinshajiang polymetallic metallogenic belt,northwest Yunnan,China.There is no consensus on the genesis of the ore deposit owing to the limited studies on the chemical compositions of sulfides.This study used an electron probe micro-analyzer to constrain the chemical compositions of pyrite,chalcopyrite,molybdenite,and sphalerite in the porphyry Cu ore of the Yangla Cu deposit and compared them with the chemical compositions of sulfides in the skarn Cu ore.The trace element contents and their occurrences were used to estimate the metallogenic temperature and infer the genesis of the Yangla deposit.The results show that the sulfides in the porphyry Cu ores have variations of ore element concentrations relative to their theoretical values.Pyrite is depleted in S but elevated in Fe;chalcopyrite is depleted in Cu,Fe,and S;and molybdenite and sphalerite are enriched in S whilst depleted in Mo and Zn.The concentrations of the main metallogenic elements Cu,Fe,Mo,Zn,and S in the porphyry are generally lower than those in skarn,suggesting that the porphyry ore was formed in a moderate to moderate-high temperature metallogenic environment.The formation time may also be slightly later than that of the skarn Cu ore.Elements such as As,Co,Cu.Pb,Zn,Mo,Cd,and Ni mainly exist as isomorphic replacements and mineral inclusions in the sulfides of both porphyry and skarn Cu ores.The trace element features of sulfides in the two ore bodies show that the Yangla Cu deposit may be a composite super imposed ore deposit,and让s formation has undergone the process of exhalative-sedimentary to skarnporphyry mineralization.
文摘采用文献计量法对Web of Science(WOS)核心合集和中国知网(CNKI)中1990—2022年数据库有关酿酒葡萄成熟度文献进行可视化分析。结果表明,研究酿酒葡萄成熟度领域的国家主要为西班牙125次、意大利97次、美国93次,国际上University of Adelaide、French National Agriculture Research Institute、University of California是目前领域中最为重要和关键的机构,各机构合作关系较为紧密。国内西北农林科技大学和宁夏大学保持较高发文量,但合作较少,应多加强合作。研究热点主要集中在“酿酒葡萄”“果实品质”“成熟度”“采收期”“气候”“温度”“颜色”等关键词,报道了光照、温度、水肥、气候、采收期等对酿酒葡萄及葡萄酒感官品质、理化指标、酚类物质的影响。
