Typomorphic Characteristics and Significance of Pyrrhotite in Xiongcun Cu-Au Deposit
详细信息
- 责任者：Li Zhijun (Chengdu University of Technology ; Chengdu 610059 ; China) ; Huang Yong
- 刊名：Acta Mineralogica Sinica
- 出版年：2012
- 卷期：32(2)
- 关键词：金矿 ; gold ores ; 斑岩铜矿床 ; porphyry copper deposit ; 磁黄铁矿 ; pyrrhotite ; 西藏 ; Tibet
- 页码：p.205-210
- 图表：4 illus., 2 tables, 16 refs.
- 分类号：1001
- issnNo：ISSN1000-4734
- isbnNo：CN52-1045/P
摘要
Xiongcun copper-gold deposit is one of the large porphyry copper-gold mines discovered in Tibet, with ore minerals including chalcopyrite, pyrite, pyrrhotite, magnetite, galena and sphalerite. The pyrrhotite is high in ore and usually accretes to chalcopyrite. It is indicated with the electron microprobe that the pyrrhotite has two crystal forms, hexagonal and monoclinic. The ore-forming sequence is following the order of cp+py+mag,cp+py+pyr and py+sph+gal. According to the result of microprobe analysis, the formational temperature is about 360 ℃ and then drops slowly, suggesting the long time of mineralization.