| 西藏隆子县扎西康锌多金属矿床矿石组构研究及成因探讨 |
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| 关键词:Zhaxikang Zn-polimetallic deposit ore fabric metallogenesis epoch metallogenesis stage genesis |
| 基金项目:国家973项目(编号: 2011CB403103)；公益性行业科研专项(编号: 201011013-3) |
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| A Tentative Discussion on Ore Fabric and Genesis of the Zhaxikang Zn-polymetallic Deposit, Lhunze County, Tibet |
| Based on detailed drilling geological record and microscopic identification, the authors conducted a systematic study of the ore fabric characteristics of the Zhaxikang zinc-polymetallic deposit. In the mining area, the main ore structures are blocky, stockwork, disseminated, brecciated, geode and druse ones, formed by typical filling and metasomatism. The ore textures were formed mainly by crystallization and metasomatism, and subordinately by the influence of the pressure and the solid solution. Tectonism and mineralization of this mining area are of multi-stage and complex characteristics, and thus the textures formed by metasomatism are most common and of various types. Based on the research result of the ore fabric, combined with previous studies, the authors roughly divided the metallogenic periods into diagenesis, middle to low-temperature hydrothermal mineralization and supergene oxidation, with the low-temperature hydrothermal mineralization period being the most important metallogenetic period in this deposit. According to the features of mineral assemblages, six stages of mineralization were recognized, i.e., pyrite-quartz-calcite stage, sphalerite-pyrite-galena-arsenopyrite-iron rhodochrosite stage, galena-sphalerite- sulfosalt minerals stage, quartz-calcite-stibnite stage, quartz-calcite stage and oxidized minerals stage. It is held that the Zhaxikang zinc polymetallic deposit is a middle to low-temperature hydrothermal deposit, formed by filling and metasomatism and controlled by tectonic-magmatic activity. |
| WANG Yi-yun,TANG Ju-xing,ZHENG Wen-bao,LIN Bin,LENG Qiu-feng,CHEN Wei,DING Shuai,SONG Jun-long,XU Yun-feng.2012.A Tentative Discussion on Ore Fabric and Genesis of the Zhaxikang Zn-polymetallic Deposit, Lhunze County, Tibet[J].Acta Geoscientica Sinica,33(4):681-692. |
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