浙江弄坑金银矿区黄铁矿成分标型研究

Research on the Composition Typomorphism of Pyrite from Longkeng Gold-Silver Mineralization District in Wuyi, Zhejiang Province, China

为确定弄坑矿区金银矿化成因类型及对该矿区深部矿化远景进行预测，应用找矿矿物学方法研究了浙江武义弄坑金银矿区黄铁矿成分及其特征比值(如S/Fe、Fe/(S+As)、Co/Ni、S/se、Se/Te、Au/Ag)、S、Pb同位素特任，分析了黄铁矿成分的成因标型及找矿标型，为该矿化区矿化成因类型的确定提供可靠性的矿物学依据。同时，利用黄铁矿徽量元素的三角形图解对本矿区深部矿化远景进行了预测。结论显示，该区金银矿化属浅成低温火山热液成因类型，在矿化区的深部地段可望找到富的金银矿化体。

Longkeng gold silver mineralization district is located in Wuyi County, Zhejiang Province. In order to confirm the genesis of Longkeng gold-silver mineralization and its mineralization perspective of the depth in the ore district. The study method is the method of prospecting mineralogy in this paper. The results： The paper studied the composition and its ratios （S/Fe,Fe/（S＋As）,Co/Ni,S/Se,Se/Te,Au/Ag）, lead isotope, sulfur isotope characteristics of the pyrite in Longkeng gold silver mineralization district, analyzed the genesis and prospecting typomophism of the pyrite composition in Longkeng, worked out a large amount of information on the genesis and prospecting potential, meanwhile, prognosticated mineralization perspective of the depth in the ore district by using the trigonal illustrate of the pyrite composition characteristic, which not only provided reliable mineralogical basis for the genesis of Longkeng gold-silver mineralization, but also gave efficient evadence for gold and silver prospecting in depth in the mineralization district. The conclusions： The authors consider that Longkeng gold silver mineralization is of epithermal vocanogenic origin. It would be profitable in the ore prospecting in depth in Longkeng gold silver mineralization district.