滇西北衙金多金属矿载金矿物特征浅析

滇西北衙金多金属矿区是一个以金为主,同体共伴生铁、铜、铅、锌、银,与喜山期富碱斑岩有关的矽卡岩热液型金多金属矿床。近年通过中深部勘查,找矿获得重大突破,发现了大量的原生矿体。本文通过对分析原生矿石的主要载金矿物黄铁矿、白铁矿、黄铜矿、磁黄铁矿、方铅矿和斜方辉铅铋矿等6种矿物的特征和含金量,并对矿物中金的赋存特征做了论述和总结,认为金主要形成于中—低温热液阶段。

Analysis on the characteristics of gold bearing minerals in Yajin polymetallic ore in the north of Western Yunnan

The Beiya gold polymetallic ore area in western Yunnan is a skarn hydrothermal type gold polymetallic ore deposit,which is mainly composed of gold and associated with pig iron,copper,lead,zinc and silver in the same body,and related to the alkali rich porphyry of Himalayan period.In recent years,a great breakthrough has been made in the exploration of the middle and deep,and a large number of primary ore bodies have been found.Based on the analysis of the characteristics and gold content of the six main gold bearing minerals of the primary ore,pyrite,chalcopyrite,pyrrhotite,galena and orthopyroxene bismuth,this paper discusses and summarizes the occurrence characteristics of gold in the mineral,and concludes that gold is mainly formed in the middle low temperature hydrothermal stage.