Mineralogy of Arsenian Pyrites and Arsenopyrites of Carlin-Type Gold Deposits in Yunnan-Guizhou-Guangxi “Golden Triangle” Area, <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on">Southwestern China</st1:place> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

Mineralogy of Arsenian Pyrites and Arsenopyrites of Carlin-Type Gold Deposits in Yunnan-Guizhou-Guangxi “Golden Triangle” Area, oft-com:office:smarttags" />Southwestern China oft-com:office:office" />

详细信息

责任者：Chen Maohong (China University of Geosciences ; Beijing 100083 ; China) ; Mao Jingwen
刊名：Mineral Deposits
出版年：2009
卷期：28(5)
关键词：卡林型金矿床 ; Carlin-type gold deposit ; 云南 ; Yunnan Province ; 贵州 ; Guizhou Province ; 广西 ; Guangxi
页码：p.539-557
图表：6 illus., 8 tables, 34 refs.
分类号：1001
issnNo：ISSN0258-7106
isbnNo：CN11-1965/P

摘要

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Petrographic observations and electron-probe micro-analysis (EPMA) of sulfides from different subclasses of typical Carlin-type gold deposits in Yunnan-Guizhou-Guangxi “golden triangle” areas show that both arsenian pyrites and arsenopyrites are major gold-bearing minerals. Gold-bearing pyrites are dominated by zoned arsenic pyrites and fine-grained euhedral arsenian pyrites. The major modes of occurrence for gold are “invisible” nanometer-size sub-microscopic inclusion gold grains, with minor ones being “invisible” lattice gold and “visible” micrometer-size microscopic native gold. The gold-bearing minerals and the gold modes of occurrence have no essential difference in different subclasses of Carlin-type gold deposits in Yunnan-Guizhou-Guangxi “golden triangle” areas, suggesting that they had the same ore-forming process and setting.

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