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经过对小秦岭-熊耳山地区金矿床矿石矿物标型特征的分析研究,总结出如下规律:1)黄铁矿晶形随成矿阶段而变化,成矿早期和晚期,黄铁矿常常呈立方体,成矿中期以五角十二面体及其聚晶为主;2)贵金属矿物的标型:石英脉型金矿以自然金为主,蚀变岩型金矿则以银金矿为主;在同一成因类型的矿床中,成矿早期见少量自然金,成矿中期在石英-黄铁矿阶段自然金大量出现,而多金属硫化物阶段,银金矿逐渐增多;成矿晚期,仅有少量自然金;3)金的成色:小秦岭地区以自然金为主,且成色较高,平均在844～937之间;而熊耳山地区由于出现银金矿或碲化物导致金成色相对偏低,平均813～914。形成温度高者金成色亦高,反之则低;另外,金的成色随着成矿作用早晚而变化,石英脉型金矿从早到晚,其成色有968～940～870变化,蚀变岩型则由929～942.7向876.7～899变化。总而言之,金矿物的标型反映的是其形成的物化环境、成矿条件、矿物的空间分布规律等,在进一步找矿中可以作为参考依据。
After analyzing and analyzing the characteristics of ore mineralogical characteristics of the gold deposits in Xiaoqinling-Xiongershan area, the following laws are summarized: 1) The pyrite crystal form changes with the stage of metallogenesis, and the pyrite often has cubes in the early and late stages of mineralization, The mid-term metallogenic pentagonal dodecahedron and its polycrystalline mainly; 2) the standard type of precious metal mineral: quartz vein type gold ore is mainly natural gold, alteration rock type gold ore is mainly silver and gold; in the same In the genesis-type deposits, a small amount of natural gold was found in the early stage of metallogeny. In the mid-stage of mineralization, a large amount of natural gold was found in the quartz-pyrite stage, while the polymetallic sulphides phase increased with the increase of silver and gold. In the late stage of mineralization, only a small amount of natural Gold; 3) gold fineness: small Qinling natural gold-based areas, and high color, with an average of 844 ~ 937; and Xiong’ershan area due to the emergence of silver gold ore or telluride led to relatively low gold color, the average 813 ~ 914. In addition, the fineness of gold varies with the mineralization in the morning and evening. The quartz vein type gold deposit changes from 968 to 940 to 870 from morning till evening, and the alteration rocks Type from 929 ~ 942.7 to 876.7 ~ 899 changes. All in all, the type of gold mineralization reflects its physical and chemical environment, the metallogenic conditions and the spatial distribution of minerals, which can serve as a reference for further prospecting.