江西遂川草林金矿床地质特征及找矿标志

摘要

Caolin gold deposit belongs to quartz vein type,which is located in the inner and outer contact zone of Caledonian granodiorite rock mass,within the two synclinorium flanks along the north west direction. Gold mineralization is closely related with NW quartz veins in alteration and fracture zone in the wall rock. The orebodies occur in groups.The length of orebody is 20 ~ 70m,and the thickness is 0.12 ~ 1.39m. Gold metaliogenic age is determed to be Yanshan period.The orebody is enriched in the combination place of NE and EW fractures and sulfide complex veins.The orebody is enriched in the vicinity of the redox inter-face.The geochemical anomaly and altered quartz veins are the main prospecting signs.%草林金矿属石英脉型金矿床。矿床(体)赋存于加里东期花岗闪长岩体内外接触带中,沿 NW向横店复向斜两翼分布。金矿化与岩石中发育的 NW 向蚀变破碎带石英脉关系密切,矿体成组成群分布,矿体长度20~70m,厚0.12~1.39m。金成矿年龄测定为燕山期。矿体富集与多金属硫化物复脉充填和 NE 向、EW 向裂隙构造复合处有关。矿体富集于氧化-还原界面附近。地球化学异常和蚀变破碎带石英脉是主要找矿标志。