calcitization + carbonaceous + pyritization facies belt (IV). The variation characteristics of metallogenic elements, characteristic element compositions and element ratios show that the mineralization indicator elements follow the horizontal zoning law of Pb-Zn-Cd--Pb-Zn-Ag-Cu (Sb)--Ag-Cu-As-Sb--As-Sb in different alteration zones, and the variation trend of mineralization indicating elements is summarized・ This study provides a reference to the deep prospecting and exploration in this deposit and studies on mineralization-alteration zoning of the same type of deposit. [ABSTRACT FROM AUTHOR]
| Abstract (Chinese): |
川西南大梁子铅锌矿床是川滇黔地区震旦系灯影组碳酸盐岩赋矿的后生热液型铅锌矿床的代表之 一。针对该矿床矿化蚀变分带规律不清的现状, 基于矿区內1884 m、1944 m、2004 m、2064 ni中段 1: 200矿化-蚀变岩相学填图, 精细解剖了蚀变类型、强度及蚀变岩组构, 总结了矿化蚀变的强弱变化、 矿物共生组合、元素组合及其空间分带特征, 揭示了不同矿化蚀变带特征元素含量的变化规律, 构建了 从铅锌矿体中心向赋矿围岩的矿化蚀变空间分带模式: 中等硅化+白云石化角砾状铅锌矿石相带(I带)--中等硅化+白云石化网脉状铅锌矿化相带(II带)--强硅化+白云石化+方解石化+细脉至星点状黄铁矿 化相带(111带)--方解石化+炭质+黄铁矿化相带(IV带)。基于成矿元素、特征元素组合及其元素比值 的变化特征研究, 矿化指示元素在不同蚀变带中依次具有Pb-Zn-Cd--Pb-Zn-Ag-Cu (Sb) -- Ag-Cu-As-Sb--As-Sb的水平分带规律, 总结了矿化指示元素的变化趋势。该研究对该矿床深部找矿勘查和同类矿床矿 化蚀变分带研究具有启示意义. [ABSTRACT FROM AUTHOR] |
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| Autor: |
袁 航, 润生, 冯志兴, 吴 鹏, 管申进, 丁天柱, 李凌杰, 杨博 |
| Předmět: |
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| Zdroj: |
Journal of Geomechanics; 2022, Vol. 28 Issue 3, p432-447, 16p |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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