| 黑龙江金厂金矿床地质特征及成因探讨 |
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| 引用本文：.2003.Geology and Ore Genesis of Jinchang Gold Deposit, Heilongjiang Province[J].Mineral Deposits,22(1):56~64 |
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| 基金项目:国家地质调查项目（DKD2001027-2)和武警黄金指挥部科研项目（HJ-5） |
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| 中文摘要:通过对矿体围岩花岗闪长岩、花岗斑岩类和隐爆角砾岩筒控矿-容矿构造及矿石组分的研究，将金厂矿床金矿化类型分为破碎蚀变岩型、裂隙充填型和角砾岩型；对矿物学和同位素地球化学的研究结果表明，成矿物质主要来源于深部(岩浆源)，在成矿作用早期阶段成矿流体主要为岩浆水，晚期阶段有部分大气水的加入。金厂金矿床是中生代火山-次火山活动的产物，矿床属浅成低温岩浆期后热液型金矿床。 |
| 中文关键词:地质学 金矿床 角砾岩筒 地质特征 矿床成因 金厂 |
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| Geology and Ore Genesis of Jinchang Gold Deposit, Heilongjiang Province |
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| Abstract:The Jinchang gold deposit, a newly_discovered shallow_seated hydrothermal deposit occurring within breccia pipes, is temporally and spatially associated with such Mesozoic volcano_subvolcanic rocks as diorite, granodiorite, granite, granitic porphyry, and dioritic porphyry. Orebodies are controlled by cryptoexplosion breccia pipes, which generally occur at the intersections of two or three groups of faults in different directions. In terms of ore_controlling structures and ore textures, gold mineralization in the deposit can be divided into three types, viz., breccia type, fissure filling type and fracture altered rock type. Preliminary studies of mineralogy, geochemistry and stable isotopes reveal that the ore_forming materials are mainly derived form magmatic source; and the mineralizing fluid is magmatic in origin with the involvement of meteoric water at the late stage of gold mineralization. This suggests that the Jinchang gold deposit is a product of Mesozoic volcanism and/or subvolcanism and belongs genetically to the shallow_seated post_magmatism hydrothermal type. |
| keywords:gold deposit, breccia pipe, geological features, ore genesis, Jinchang |
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