文献类型：期刊文章

作　　者：刘英俊[1] 张景荣[1] 乔恩光[1] 毛惠新[1] 赵梅芳[1]

机构地区：[1]南京大学地质系

出　　处：《地球化学》

年　　份：1983

卷　　号：12

期　　号：3

起止页码：229-240

语　　种：中文

收录情况：CAS、JST、RCCSE、RSC、SCI-EXPANDED(收录号：WOS:A1983RZ92700002)、WOS、ZGKJHX、普通刊

摘　　要：Six elemental groups in the gold deposits in the study region have been distinguished:( 1 ) tungsten-antimony-gold; (2) tungsten-gold; (3) antimony-gold; (4) lead-zinosilvergold; (5) uranium-silver-gold; (6) simple gold. Discussed in the present paper are the distribution, source, mineralization, migration and concentration of gold. The resuhs show that the ore-controlling strata or source beds related to gold deposits all show high background values of gold; the gold and other associated ore-forming dements are obviously derived from the country rocks. Mineralization is related chiefly to regional metamorphism in the ore-controlling strata, or alkali-pervasing metasomatism. During metamorphism in the orecontrolling strata, gold was released into solutions, and then transported and deposited in some localities. Gold carried in hydrothermal solutions occurs mainly in the form of Na[Au(SH)2]. Native gold or electrum were precipitated from the ore solutions and concen.trated into ore deposits with the decrease of T, pH and fO2.

关 键 词：金矿 地球化学 伴生成矿元素  成矿作用 区域地质

分 类 号：P618.51]