皖南浙西热水成因硅岩的含矿性探讨

皖南浙西分布着一条硅质岩带,时代为晚震旦世的皮园村组及早寒武世的荷塘组.这套硅岩已经得到了一定程度的研究,研究内容主要集中于硅岩的岩石学、环境类型、物质来源,近年来关于硅岩带作为金矿源层及金矿直接产层引起了人们的关注.研究区硅岩的地球化学、环境与物源的探讨都揭示了其作为热水成因的特点.笔者在积累前人资料的基础上,揭示了金矿源及其在附近寻找接触热液型的金矿床的可能性.本区硅岩作为矿源层或矿层,属于层控型,由当时海底热液喷流成岩作用和地下水热液成矿作用形成.

ORE POTENTIALITY OF HYDROTHERMAL CHERT FROM SOUTHERN ANHUI TO WESTERN ZHEJIANG

A chert belt occurs from western Zhejiang to southern Anhui, and belongs to early Cambrian Hetang Formation and late Sinian Piyuancun Formation. Some studies have been done on chert including petrology, sedimentary environment and material sources. Recently, more attention has been paid to chert because chert belt can be as gold source bed or gold - bearing strata. Geochemistry, sedimentary environment and material sources of chert from western Zhejiang to southern Anhui all proclaimed that chert is hydrothermal origin. Potentiality to find hydrothermal gold deposit in the chert belt is discussed.