江西省区域成矿基本特征

    BASIC CHARACTERISTICS OF REGIONAL ORE MINERALIZATION IN JIANGXI PROVINCE

    • 摘要: 江西矿产丰富,矿种繁多,其中铜主要分布于江西北部,而钨则主要分布于江西南部,故有“北铜南钨”之称。随着地质研究工作的不断深入,稀有、稀土等矿产日益成为江西南部的重要矿产;而钨矿则扩展到江西北部地区,同时亦相继发现一些稀有、稀土矿床,从而在一定程度上改变了全省矿产分布格局。江西矿床类型复杂,成矿作用多种多样,有与沉积作用(包括火山—沉积作用岩浆作用以及变质作用等有关的矿床。随着铜、钨等矿床的普查勘探与研究工作的日益深入,在

       

      Abstract: This paper deals with the basic characteristics of regional ore mineralization in Jiangxi province in the light of ore-bearlng sedimentary formations and ore-bearing magmatic formations and their structural controlling factors. Stress is laid on ore-bearing sedimentary formations, particularly the important role of polymineralic volcanic-sedimentary formations in ore-forming processes in various geologic ages. The author points out that the presence of ore-bearing sedimentary formations is the foundation for ore-forming processes of various ages in Jiangxi. The differences in material composition of polymineralic volcanic-sedimentary formations and degree of development of their rock types are the important cause accounting for the distinct difference between the types of ore deposit of northern and southern Jiangxi. On that basis and in connection with the basic characteristics of ore-forming processes, metallogenic environment and ore-forming mechanism, the main ore deposits in the province are classified into five major genetic types, litho-bound deposits, sedimentary deposits, strata-bound deposits, supergene deposits and deposits controlled by several factors. Their formation and distribution are intimately associated with four metallogenic systems in the province, and hence may reflect the eyolution of the four metallogenic systems and their genetic concepts and models in a comprehensive way and provide basic data upon which further mineral prospecting work can be based.

       

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