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砂岩铜矿是铜矿床的一种重要类型,牟定清水河铜矿就是该类型的一个高品位矿床。该矿床主要含有辉铜矿、孔雀石以及少量斑铜矿、黄铜矿等。银主要呈矿物状态产于辉铜矿中(达1296.96克/吨)。本文主要是研究银的赋存状态,用电子探针测定了样品,研究结果指出:银和铜的关系很密切,银通常以细粒矿物产于辉铜矿中。分析结果发现的银矿物有角银矿、辉银矿、自然银、硫铁银矿、银金矿等。这些银矿物通常在铜硫化物的胶结带,由表生作用形成。
Sandstone copper deposit is an important type of copper deposit and Mouding Qingshuihe copper deposit is a high-grade ore deposit of this type. The deposit contains chalcocite, malachite and a small amount of burnt copper, chalcopyrite and so on. Silver is mainly mineralized in chalcocite (up to 1296.96 g / t). In this paper, we mainly study the occurrence of silver and determine the sample by electron probe. The results show that the relationship between silver and copper is very close, silver is usually produced by fines minerals in chalcopyrite. Silver mineral found in the analysis of the results of the angle of silver, silver, natural silver, sulfur iron silver, silver and gold and so on. These silver minerals are usually formed by the action of epigenesis on the cemented zone of copper sulphides.