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The modes of gold-migration in the gossan-type gold deposit

机译:戈山型金矿床中的金迁移方式

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More than 30 gossan-type gold deposits have beed discovered in the Middle-Lower Yangtze River Area. The profile of gold-bearing gossan can be divided into four subzones from upper to lower:(i) gold-deficient or gold-leached gossan (Au contents (0.1-0.8)x10~(-6) transitonal subzone; (ii) secondary gold concentration subzone (Au (4-20)x10~(-6); (iii) oxide and sulfide transitional subzone (Au (0.5-1.5)x10~(-6); (iv) Primary sulfide ore (Au(0.5-1)x`0~(-6). Au Concentration in the subzone (ii) is 2-20 times higher than that in subzone (IV). Obviously migration and secondary concentration of Au had happened in the process of oxidationof primary sulfides.
机译:在长江中下游地区发现了30多个戈桑型金矿床。含金的釜山的轮廓可以从上到下分为四个分区:(i)缺金或浸金的釜山(Au含量(0.1-0.8)x10〜(-6)过渡子分区;(ii)次要分区金浓度分区(Au(4-20)x10〜(-6);(iii)氧化物和硫化物过渡分区(Au(0.5-1.5)x10〜(-6);(iv)初级硫化矿石(Au(0.5- 1)x`0〜(-6)。(ii)区域的Au浓度是(IV)区域的2-20倍,显然在初级硫化物的氧化过程中发生了Au的迁移和二次浓度。

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