扬子地块西北缘、西南缘卡林型金矿的干酪根与金矿化关系  

Correlation between Kerogen and Gold Mineralization of Carlin-type Gold Deposits in Northwest and Southwest Margin of Yangtse Plate

作　　者：谭运金[1] 

机构地区：[1]中国有色金属工业总公司矿产地质研究院

出　　处：《广西科学》1997年第4期255-258,共4页Guangxi Sciences

基　　金：国家攀登计划项目

摘　　要：根据干酪根的元素组成及其他的矿床地质、地球化学特征确定，扬子地块西北缘、西南缘的卡林型金矿床的干酪根属腐泥型干酪根。干酪根的元素组成和成熟度是判别大型卡林型金矿床和小型卡林型金矿床或矿点的重要标志。大型卡林型金矿床的干酪根，碳的平均含量为４２．３５％，氢的平均含量为１．６９％，氧的平均含量为５．０３％，小型卡林型金矿床或矿点的干酪根，碳的平均含量为７７．２３％，氢的平均含量为１．２２％，氧的平均含量为４．５３％。大型卡林型金矿床的干酪根成熟度特征。Based on element composition of kerogen and other geologicgeochemical characteristics of deposit,it may define that, the kerogen of carlintype gold deposit in northwest and southwest margin of Yangtse plate is belong to sapropel type one.The element composition and mature of kerogen is an important distinguish mark between great and small scale carlintype gold deposits.In the great scale carlintype gold, deposit,average value C,H and O of kerogen are 4235%, 169% and 503% respectively,while in the small scale carlintype gold deposit, average value C,H and O of kerogen are 7723%, 122% and 453% respectively. The mature of kerogen in great scale carlintype gold deposit reflected that,its mature process has undergone the decarbonation and endogenetic oxidation of oreformed fluid.

关 键 词：干酪根 成熟度 卡林型 金矿床 金矿化 

分 类 号：P618.510.5[天文地球—矿床学]