A wealth of data shows that the Au abundance of metamorphic rocks in greenstone terrains is rather low (0.17×10^(-9) to 2.40×10^(-9) in average), and in the relevant granites is only 0.62×10^(-9) to 1.20×10^(-9) averagely.
A wealth of data shows that the Au abundance of metamorphic rocks in greenstone terrains is rather low (0.17×10^(-9) to 2.40×10^(-9) in average), and in the relevant granites is only 0.62×10^(-9) to 1.20×10^(-9) averagely.
大量的国内外资料表明：绿岩地体中变质岩的金丰度较低，平均为0.71×10^(-9)～2.40×10^(-9)，与金矿有关的花岗岩金丰度更低，平均只有0.62×10^(-9)～1.20×10^(-9)。