| 产于千枚状砂质板岩中的微细浸染型金矿床的特征探讨 |
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| 引用本文： | 霍华生.产于千枚状砂质板岩中的微细浸染型金矿床的特征探讨[J].铀矿地质,1993(6). |
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| 作者姓名： | 霍华生 |
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| 作者单位： | 西北地勘局217大队 宁夏银川 |
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| 摘 要： | 安家岔金矿床是由砂金追根溯源而找到的矿床。矿床产于中泥盆统西汉水群安家岔组浅海相碎屑-碳酸盐沉积建造中。金矿化受层位、构造、蚀变控制明显。低品位的矿化呈微细浸染状产于蚀变的砂质板岩中,金矿体为似层状;高品位的矿化受断裂和脉体控制,呈脉状、透镜状产出。经研究初步认为安家岔金矿床是同生沉积后生叠加再造的层控型金矿床。
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| 关 键 词： | 微细浸染 矿化特征 |
A MICRO-GRAINED DISSEMINATED GOLD DEPOSIT OCCURR-ING IN PHYLLITIC SANDY SLATE AND ITS CHARACTERISTICS |
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| Huo Huasheng.A MICRO-GRAINED DISSEMINATED GOLD DEPOSIT OCCURR-ING IN PHYLLITIC SANDY SLATE AND ITS CHARACTERISTICS[J].Uranium Geology,1993(6). |
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| Authors: | Huo Huasheng |
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| Abstract: | Anjiacha gold deposit is a bedrock gold deposit which was discovered by tracing placer gold.The deposit is located in clastic-carbonate sedimentary formation of neritic facies,the Middle Devonian Xihanshui Group Anjiacha Formation.Gold mineralization is evidently controlled by stratigraphic horizon,structures and alteration. Low grade mineralization occurs as micro-grained dissemination in altered phyllitic sandy slate,and gold orebodies are in stratoid form. High grade mineralization is controlled by faults and vein-filling with veins and lenses in form. It is preliminarily considered that the deposit is of stratabound type originated from syngenetic sedimentary eoncentration,epigenetic superimposition and regeneration. |
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| Keywords: | Micro-grained dissemination Characteristics of mineralization |
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