| 吉林四平山门银矿床地质特征 |
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| 引用本文： | 田维盛,邵俭波.吉林四平山门银矿床地质特征[J].矿床地质,1991,10(2):152-160. |
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| 作者姓名： | 田维盛 邵俭波 |
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| 作者单位： | 吉林省地矿局第三地质调查所，吉林省地矿局第三地质调查所 |
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| 摘 要： | 山门银矿区位于吉林地槽褶皱带西侧石岭隆起带中。银矿体分布于印支-燕山期中-酸性侵入岩体与上奥陶统石缝组断裂叠加-复合接触带的内外侧。矿体严格受NNE向断裂控制,为一裂隙充填为主的破碎蚀变岩型银矿床。成矿热液及成矿物质具多来源,成矿具多期多阶段,成矿环境为低温低压低盐度。
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| 关 键 词： | 银矿 矿床 地质特征 吉林 |
Geological characteristics of the Shanmen silver deposit in Siping, Jilin Province |
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| Abstract: | The Shanmen silver ore district lies in Shiling uplifted belt 011 the western side of Jilin eugeosynclinal fold belt, and silver ore bodies are distributed on the inner and outer sides of the fracture superimposed-compound contact zone between the Indosinian-Yanshanian intermediate-acid intrusive body and Upper Ordovician Shifeng Formation. The major host rocks are metamorphosed calc-pelitic siltslone, slate, marble as well as quartz diorite and monzonitic granite. Strictly controlled by NNE-trending fractures, the ore bodies are mostly blind ones which occur as veinlike, stratoid and lenticular bodies in nearly en echelon arrangement. The deposit is a shattered altered rock type silver deposit with fissure-filling being dominant. The formation of the ore bodias shows that ore materials were derived from multi-sources, and the ore-forming process was characterized by the superimposition of poly-phases and poly-stages. Mineralization took place in a hydrothermal environment with low temperature, low pressure and low salinity and dominated by underground hot water and meteoric water. |
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