| 西藏南木林县浦桑果铜多金属矿床矿石矿物特征及钴、镍元素赋存状态研究 |
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| 关键词:Tibet Gangdise Pusangguo ore mineral composition modes of occurrence of Co-Ni cobaltite |
| 基金项目:国家973项目(编号: 2011CB403103);青藏专项(编号: 1212011085529) |
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| 摘要: |
| A Study of the Characteristics of Ore Minerals and the Modes of Occurrence of Co-Ni in the Pusangguo Copper Polymetallic Deposit, Namling County, Tibet |
| Located in the Namling Country of Tibet, the Pusangguo copper polymetallic deposit is a skarn-hydrothermal vein type deposit and lies in the eastern part of the Gangdise belt. The ore mineral compositions and the modes of occurrence of Co-Ni were systematically studied in this paper. The ores are made up of some complex medium-low temperature hydrothermal minerals, such as chalcopyrite, pyrite, galena, marmatite, pyrrhotite and covellite. The modes of occurrence of Co-Ni revealed by means of microscope and scanning electron microprobe indicate that Co-Ni are mainly present as cobaltite (Co 17.87%, Ni 12.66%); and are also scattered in ferrous sulfides, such as chalcopyrite (Co 0.04%, Ni 0.08%), pyrite (Co 0.40%, Ni 0.20%), sphalerite (Co 0.14%, Ni 0.06%), and pyrrhotite (Co 0.79%, Ni 0.18%), in which Co-Ni exist in the form of isomorphous replacement of Fe. The results indicate that there exists a new type of mineralization in the Gangdise belt, and this discovery sup-plies important information for further exploration. |
| YANG Hai-rui,ZHONG Kang-hui,Dorji,Phurbu Tsering,GAO Yi-ming,CUI Xiao-liang.2012.A Study of the Characteristics of Ore Minerals and the Modes of Occurrence of Co-Ni in the Pusangguo Copper Polymetallic Deposit, Namling County, Tibet[J].Acta Geoscientica Sinica,33(4):624-632. |
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