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黔西南水银洞金矿床载金黄铁矿标型特征
引用本文:付绍洪,顾雪祥,王乾,夏勇,张兴春,陶琰.黔西南水银洞金矿床载金黄铁矿标型特征[J].矿物学报,2004,24(1):75-80.
作者姓名:付绍洪  顾雪祥  王乾  夏勇  张兴春  陶琰
作者单位:1. 成都理工大学地球科学学院,四川成都,610059;中国科学院地球化学研究所矿床开放实验室,贵州贵阳,550002
2. 中国科学院地球化学研究所矿床开放实验室,贵州贵阳,550002
3. 成都理工大学地球科学学院,四川成都,610059
基金项目:国家自然科学基金(49872038),"中国科学院百人计划"项目
摘    要:水银洞金矿床为近年来在黔西南地区所发现的又一重要卡林型金矿床,黄铁矿为矿床的重要载金矿物。通过系统采样和光片鉴定,区分出具有不同标型特征的四种黄铁矿,即草莓状黄铁矿、生物碎屑状黄铁矿、粗粒自形黄铁矿和细粒自形黄铁矿。四种黄铁矿的含金性存在着显著差异,以生物碎屑状黄铁矿和细粒自形黄铁矿的含金性为优,而草莓状黄铁矿和粗粒自形黄铁矿的含金性较差。各种黄铁矿的主成分及微量组分也显示出一定的变化规律。本文初步分析了四种黄铁矿的形成条件及金的差异性富集机理。

关 键 词:黄铁矿  标型特征  卡林型金矿  水银洞  黔西南
文章编号:1000-4734(2004)01-0075-06
修稿时间:2003年6月19日

THE TYPOMORPHIC CHARACTERISTICS OF GOLD-BEARING PYRITES FROM SHUIYINDONG GOLD DEPOSIT,SW GUIZHOU
FUShao-hong.THE TYPOMORPHIC CHARACTERISTICS OF GOLD-BEARING PYRITES FROM SHUIYINDONG GOLD DEPOSIT,SW GUIZHOU[J].Acta Mineralogica Sinica,2004,24(1):75-80.
Authors:FUShao-hong
Institution:FUShao-hong~
Abstract:The Shuiyindong gold deposit, located in SW Guizhou Province, is animportant Carlin-type gold deposit discovered recently. Pyrites are the major gold-bearing minerals in the deposit. Based on systemic sample collection and polished section identification, four forms of pyrite have been recognized:framboidal pyrite, bioclastic pyrite, coarse-grained euhedral pyrite and fine-grained euhedral pyrite. Gold abundance in the different forms of pyrite showssignificant variation: the gold contentsof bioclastic pyrite and fine-grained euhedral pyrite are significantly higher than thoseof frambiodal and coarse-grained pyrites. The different pyrites show some regularities of change in chemical composition. This paper analyzes the formation conditions of the four forms of pyrite preliminarily and discusses the mechanism of gold enrichment.
Keywords:pyrite  typomorphic characteristics  Carlin-type gold deposit  Shuiyindong  SW Guizhou
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