| 陕西小秦岭高山河地区金矿流体包裹体特征及成矿物理化学条件 |
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| 引用本文： | 冯建忠,艾霞,王书来. 陕西小秦岭高山河地区金矿流体包裹体特征及成矿物理化学条件[J]. 地球与环境, 1998, 0(1) |
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| 作者姓名： | 冯建忠 艾霞 王书来 |
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| 作者单位： | 有色总公司北京矿产地质研究所!北京，100012 |
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| 摘 要： | 小秦岭高山河地区金矿受太古界太华群变质基底与中元古界蓟县系高山河组碎屑岩盖层之间的区域不整合面及其叠加断裂构造控制。矿床形成于中低温中浅成环境，成矿流体作为低盐度低密度，成分以Na+、K+、Cl-、Ca2+为主，金矿形成于中性-弱碱性还原条件。热液上升到浅部，由于温度压力和二氧化碳逸度降低，并与围岩交代反应促使金在不整合面附近的断裂中充填成矿。
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| 关 键 词： | 流体包裹体 物理化学条件 陕西 高山河 |
FLUID INCLUSION CHARACTERISTICS AND METALLOGENIC GEOPHYSICO-CHEMICAL CONDITIONS OF GAOSHANHE GOLD DEPOSIT IN XIAOQINLING, SHAANXI |
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| Feng Jianzhong, Ai Xia, Wang Shulai. FLUID INCLUSION CHARACTERISTICS AND METALLOGENIC GEOPHYSICO-CHEMICAL CONDITIONS OF GAOSHANHE GOLD DEPOSIT IN XIAOQINLING, SHAANXI[J]. Earth and Environment, 1998, 0(1) |
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| Authors: | Feng Jianzhong Ai Xia Wang Shulai |
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| Abstract: | The Gaoshanhe gold deposit in Xiaoqinling is controlled by the unconformity plane between theArchaeozoic metamorphosed basement and the clastic rock cover of the Gaoshanhe Formation of theMiddle Proterozoic. It was formed in intermediate-lower temperature and intermediate shallow-seatedenvironments. The ore-forming fluid is characterized by low density and low salinity with Na+, K+,Cl- and H2O being dominated in chemical composition. The gold was deposited under moderatelyweakly alkaline and reducing conditions. When the fluid was ascending, the Au-bearing complexes became unstable with decreasing temperature, pressure and carbon dioxide fugacity. The interaction ofsolution with wall rocks enables the ore material to be precipitated in fissures near the unconformityplane. |
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| Keywords: | Xiaoqinling Gaoshanhe fluid inclusion metallogenic geophysico-chemical condition |
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