论文部分内容阅读
八宝山金银矿床为低硫化物型的中低温火山热液型矿床。主要蚀变类型有黄铁伊英岩化、钾长石(含冰长石)化、毒砂化、青磐岩化、碳酸盐化。黄铁伊英岩化、钾长石(含冰长石)化和毒砂化与成矿关系密切。蚀变带的岩石化学组分与蚀变矿化的关系是:蚀变愈强,矿化愈好,基性组分和Al_2O_3、Na_2O被带出也愈多,SiO_2、K_2O被大量带入,Au、Ag、Cu、Pb、Zn、As、S等元素明显增高。
The Babaoshan gold-silver deposit is a low-sulfide volcanic hydrothermal deposit. The main types of alteration are pyrite, pyroxene, feldspar (including feldspar), arsenopyrite, metamorphic rocks and carbonate. Pyrite, iron-feldspar (including feldspar) and arsenopyrite are closely related to metallogenesis. The relationship between the rock chemistry and alteration and mineralization in the alteration zone is that the stronger the alteration is, the better the mineralization is. The more basic components and Al 2 O 3 and Na 2 O are taken out, the larger the SiO 2 and K 2 O are taken in, Au, Ag, Cu, Pb, Zn, As, S and other elements were significantly increased.