内蒙古石匠山矿区矿石特征及银赋存状态
Analysis on Ore Composition and the Occurring States of Ag of Shijiangshan Mining Area, Inner Mongolia
作者: 程书婷 , 曹建劲 :中山大学地球科学与地质工程学院,广东 广州;广东省地质过程与矿产资源探查重点实验室,广东 广州;
关键词: 多金属矿床; 石匠山矿区; 电子探针分析; 银赋存形态; Polymetallic Deposit; Shijiangshan Mining Area; EPMA; The Occurring States of Ag
摘要:Abstract: Although the average grade of silver is high in Shijiangshan mining area, lacking basic geological works and states of Ag in the ore, it is really difficult to recover Ag in the ore. In order to get rid of this situation, necessary basic geological researches are of great importance for the next stage exploration to recover Ag. This paper is based on field investigation, data of eight deep ore samples analyzed by partial reflective microscope and EPMA, aiming to discuss features of sulfide minerals, states of Ag and the genetic type of this mineral deposit. The experiment result shows that deep ore samples are composed of galena, sphalerite, arsenopyrite, chalcopyrite and pyrite as its main occurring states. More importantly, further study shows that there are two forms of silver in the samples belonged to invisible silver, which are the silver of microscopic inclusions and in the form of isomorphism. Specifically, microscopic inclusion is tetrahedritedyscrasite with hypidiomorphic granular texture in pyrite and the other form silver exists mainly in the form of isomorphism in the galena with a tendency that silver content reduces from the edge to the interior. The size of the inclusion is less than 1μm, and the content of silver in galena is over 0.08 percent.
文章引用: 程书婷 , 曹建劲 (2016) 内蒙古石匠山矿区矿石特征及银赋存状态。 自然科学, 4, 307-319. doi: 10.12677/OJNS.2016.43036
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