| 王道会,文德潇,吴文飞,周子高.云南龙陵县勐兴铅锌矿床蚀变特征及找矿潜力[J].矿产勘查,2020,11(7):1365-1371 |
| 云南龙陵县勐兴铅锌矿床蚀变特征及找矿潜力 |
| Alteration characteristics and prospecting potential of Mengxing lead-zinc deposit in Longling, Yunnan Province |
| 投稿时间：2019-12-13 |
| DOI： |
| 中文关键词: 勐兴铅锌矿 方解石化 蚀变分布 近矿蚀变组合 找矿潜力 云南省 |
| 英文关键词: Mengxing lead-zinc deposit, calcite mineralization, alteration distribution, near ore alteration combination, prospecting potential, Yunnan Province |
| 基金项目:校企合作项目、云南省矿产资源预测评价工程实验室(编号:2010)和省、校创新团队项目(编号:2012)联合资助。 |
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| 中文摘要: |
| 勐兴铅锌矿床是保山-镇康Pb、Zn、Hg、稀有金属矿成矿带内的大型铅锌矿床,矿床由一套层纹状灰岩、泥灰岩所包裹,其产状与围岩基本一致,形态受层间滑动-破劈理带控制,具有一层为主,多层含矿及尖灭再现、分支复合现象。通过大比例尺钻孔编录、平-剖面蚀变组合划分以及镜下矿物学特征研究表明:① 矿区方解石化发育最广泛。② 矿区蚀变组合可以划分为方解石-硅化带、黄铁矿化带、肉红色-灰绿色硅化灰岩带。③ 矿区近矿蚀变岩可划分为肉红色夹绿色纹层状微晶含白-绢云母灰岩、浅肉红色夹浅黄绿色薄层状微晶含泥质-绢云母灰岩、灰白色夹黑色纹层状微晶含泥质-绢云母灰岩。结合前人认识以及近期勘查成果,认为矿床为沉积-改造型,其深部可能受到与岩体(隐伏)、岩脉的叠加成矿作用,具有寻找铅锌多金属矿的潜力。 |
| 英文摘要: |
| Mengxing lead-zinc deposit is the large lead-zinc deposit in the metallogenic belt of Pb-Zn-Hg and rare metals of baoshan-zhenkang.The deposit consists of a set of laminated limestone and marl, the occurrence of which is basically the same as surrounding rock, and the morphology is controlled by the interbedded slip-fracture cleavage zone. The deposit is dominated by one layer, with multiple layers of ore bearing, pinch-out reproduction and branching composite phenomena. In this paper, through large scale borehole catalogings, plane-profile alteration combination division and microscopic mineralogical characteristics research, it is concluded:①The calcite is the most widely developed.②The alteration combination of the mining area can be divided into calcite - silicification zone, pyrite zone, flesh red - gray-green silicification zone. ③The ore-adjacent altered rocks can be divided into flesh-red and green-laminar micrite containing white-sericite limestone, light-flesh and light-yellow-green laminar micrite containing pearly sericite limestone, and gray-white and black-lamellar micrite containing pearly and sericite limestone.Based on the previous knowledge and recent exploration results, it is concluded that the deposit is sedimentation-alteration type, and the deep part of the deposit may be superposed with rock mass (concealed) and dike, so it has the potential to search for lead and zinc polymetallic ore. |
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