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1岩体成矿性判别指标1.1岩体成矿指数(R)岩体成矿指数是指与岩浆岩成矿专属性有关的主要金属成矿元素的浓度克拉克值之和的算术平均值~([1])。其中:中性岩类必须参与R值计算的成矿元素有Cu,Pb,Zn;本文选择性参加计算的成矿元素为:Sn,W,Mo,Sb,Au,Ag。参与R值计算的成矿元素丰度,均为岩体的平均值。样品具有代表性,能代表岩体不同相带、不同岩石类型(含矿化和蚀变岩石)。
1 Rock Mass Mineralization Discrimination Index 1.1 Rock Mass Mineralization Index (R) The rock mass mineralization index refers to the arithmetic mean of the sum of Clarke values of the major metallogenic elements related to the ore-forming specificity of magmatic rocks. 1]). Among them, the ore-forming elements that neutral rocks have to participate in the calculation of R value include Cu, Pb and Zn; the metallogenic elements that are selected and calculated in this paper are: Sn, W, Mo, Sb, Au and Ag. The abundance of metallogenic elements involved in the calculation of R value are the average value of rock mass. The samples are representative and represent different facies belts and different rock types (including mineralized and altered rocks).