中国石墨矿床类型、成矿区带划分及成矿规律

Deposit Type, Division of Metallogenic Zones and Metallogenic Regularity of Graphite in China

根据石墨矿床成因特征,将中国石墨矿床类型划分为区域变质型、接触变质型和岩浆同化混染型三种。结合最新勘查成果,按矿床成因类型,共划分了22个石墨成矿区带,其中区域变质型16个,接触变质型4个,岩浆同化混染型2个。前寒武纪稳定陆块区是寻找区域变质型石墨矿的主要层位;中生代煤系地层与中酸性岩浆岩的外接触带是接触变质型石墨矿有利的成矿部位;侵入至石炭纪地层中的碱性花岗岩是寻找岩浆同化混染型石墨矿的重要成矿岩体。

According to the genetic characteristics of graphite deposits, the types of graphite deposits in China are divided into three types: regional metamorphism, contact metamorphism, magma assimilation and contamination type. Combined with the latest exploration results, according to the genetic type of the deposit, twenty-two graphite metallogenic belts are divided, including sixteen regional metamorphic type, four contact metamorphic type and two magma assimilation and contamination type. The Precambrian stable continental block is the main horizon for the regional metamorphic graphite deposit;the external contact zone between the Mesozoic coal measure strata and the intermediate acid magmatic rock is the favorable metallogenic site for the contact metamorphic graphite deposit;the alkaline granite intruding into the Carboniferous strata is the important metallogenic rock mass for the exploration of the magma assimilation mixed type graphite deposit.