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DOI:
:2000,Vol.>>Issue(4):297-306

新疆北部主要金矿床的成矿地球化学特征
南京大学地球科学系
A study of metallogenic geochemical characteristics of major gold deposits in northern Xinjiang
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中文摘要:主要依据成矿作用方式、基本成矿特点及关键控矿标志等,将新疆北部的主要原生金矿新划分为7个矿床类型,分别是浅成低温热液型金矿、韧性剪切带蚀变岩型金矿、微细粒浸染型金矿、浅成岩一构造蚀变岩型金矿、变质热液型金矿、石英脉型金矿及铜、金伴生型矿床。通过分析比较各矿床类型典型金矿的REE分布型式、其矿石的微量元素含量与分布型式、硫与铅同位素组成及流体包裹体成分等资料,探讨了其成矿地球化学特征。
Abstract:On the basis of mineralization modes, basic metallogenic features, key ore-controlling indicators, relationship between mineralization and its ore-forming environment, the primary gold deposits in northern Xinjiang can be divided into seven types, namely epithermal gold deposits, altered rock type gold deposits in the ductile shear zone, micro-fine-g rained dissemination gold deposits, supergene and structural-altered rock type gold deposits, metamorphic hydrothermal type gold deposits, auriferous quartz vein type deposits and copper gold assocrated deposits. By means of analysing and comparing these typical gold deposits in such aspects as REE partitioning patterns, trace element content and their partitioning patterns in gold ores, sulfur and lead isotopic com position and com position of quartz fluid inclusions, the authors deal with their metallogenic geochemical characteristics. In the light of their metallogenic geochemical features and basic ore-forming background, the authors generalize these gold deposits into four important mineralization series, viz. low-temperature and supergene gold series formed in some lateral districts beside large fractures in the island arc, gold series hosted in some ductile shear zones related to dynamic and metamorphic environment, middle-high temperature and middle-hypogene gold series formed in some orogenic belts, and copper gold associated series formed in Late Paleozoic marine volcanics. The authors also consider that a large-size gold deposit is often cha racterized by some special preferential mineralization conditions, and metamorphic hydrothermal type gold deposits have some specific mineralization features.
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基金项目:国家973项目(编号:96-915-02-05)
引用文本:
廖启林, 戴塔根, 邓吉牛, 王军升.2000.新疆北部主要金矿床的成矿地球化学特征[J].矿床地质,19(4):297~306
.2000.A study of metallogenic geochemical characteristics of major gold deposits in northern Xinjiang[J].Mineral Deposits19(4):297~306
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