云南宝兴厂金矿床地质特征及成因  

Geological characteristics and genesis of Baoxingchang gold ore district in Yunnan Province

作　　者：李汉光[1,2] 郭晓东[3] 王绍明[4] 皮清明 和正中 

机构地区：[1]中国地质大学,北京100083 [2]中国人民武装警察部队黄金第三总队,四川成都610036 [3]中国人民武装警察部队黄金地质研究所,河北廊坊065000 [4]中国人民武装警察部队黄金第十支队,云南昆明650111

出　　处：《矿床地质》2008年第5期587-595,共9页Mineral Deposits

基　　金："十一五"国家攻关项目(2006BAB01B10);武警黄金指挥部专项基金(HJ07-02)的资助

摘　　要：文章总结了云南宝兴厂金矿区地质特征,划分了成矿期和成矿阶段,通过对硫、铅、氢氧同位素特征的研究,认为下奥陶统向阳组第四岩性段的碎屑岩为金成矿的矿源层。多期次的构造-岩浆活动,形成了该区多期次、多阶段、多样式、多矿种的矿床组合类型。矿床类型主要有:斑岩型、石英脉型、构造蚀变岩型、红土型等。该金矿的形成在时间、空间上与喜马拉雅期的富碱斑岩密切相关。Located in the north of the Ailaoshan ore-forming belt, the Baoxinchang gold deposit has its unique geotectonic location that has caused complex metallogenic geological conditions and frequent structural and magrnatic activities. The formation of the gold deposit is closely related to Himalayan alkali-rich porphyry both in time and in space. This paper has summed up geological characteristics of this area and made a division of the ore-forming phases and stages. S, Pb, H, O isotope characteristics suggest that clastic rock of 4th lithologic member of Lower Ordovician Xiangyang Group seems to be the source bed of gold mineralization. Multiple phases of structural-magmatic activity has resulted in the complexity of deposit assemblage types in this area characterized by multi-phase, multi-stage, diversity and multiple mineral species. Mineral deposits are mainly of porphyry, quartz-veined, tectonically-altered rock and laterite types.

关 键 词：地质学 金矿床 地质特征 物理化学条件 成矿机理 云南 

分 类 号：P618.51[天文地球—矿床学]