地质与勘探2018，Vol.54Issue(2)：243-251,9.
黑龙江乌拉嘎金矿床成因研究进展
Progress of Research on Genesis of the Wulaga Gold Deposit in Heilongjiang Province
摘要
Abstract
The Wulaga gold deposit of Heilongjiang Province lies at the conjunction of the Taipinggou uplift and Jiayin depression,north of the Jiamu-si uplift of the Jihei fold system in the Xingmeng-Tianshan orogen. It is controlled by the deep Wulaga fault. From the discovery of this large-scale deposit to present,various models on its genesis have been proposed,such as the subvolcanic hydrothermal type,porphyry type gold deposit,hot spring type shal-low cryogenic hydrothermal gold deposit, and typical low sulfadation epithermal gold deposit. The main orebodies of this deposit are located in the contact belt between slate of Heilongjiang group and the plagioclase granite porphyry.Its mineralization occurred during the Late Yanshanian period.Many broken-rock zones developed in the west of the deposit area, serving as a good place for ore deposition. The post-magma hydrothermal fluids and meteoric water posed influence on the generation of the deposit.The structure of the ores is dominated by fine-grained,fragmentation and gel-like,vein-like and breccia-like features.The alteration of the surrounding rock is very obvious.Centered by the ore body,from the periphery to the interior of the deposit are carbon-ation,argillation,sericitization,adularization,and silicification,respectively.The alteration of the surrounding rock and its ore-bearing nature reveal that silicated alteration is the key factor for the mineralization of the Wulaga gold deposit.At present,the sporadic ore bodies in the tail mining stage are mainly located near the structural fracture zone of the granite porphyry,and the pyrite mineralization is not obvious. Therefore,more lines of evidence are needed to elucidate the genesis of this epithermal deposit characterized by porphyry mineralization. The relationship between the aluminum content in the plagio-clase granite-porphyry and the porphyry copper deposit may be a useful clue to help address this issue.关键词
乌拉嘎断裂/金矿床/晚燕山期/裂隙充填/浅成低温热液/黑龙江Key words
Wulaga fault/gold deposit/Late Yanshanian period/fissure filling/epithermal low-temperature hydrothermal fluid/Heilongjiang Prov-ince分类
天文与地球科学引用本文复制引用
高天,郭洋,陈彩云,刘福林,李永兵,刘建明,石耀霖..黑龙江乌拉嘎金矿床成因研究进展[J].地质与勘探,2018,54(2):243-251,9.基金项目
中国黄金黑龙江乌拉嘎金矿成矿特征床成矿特征与成矿潜力评价研究和基金重点项目(编号:No.41530315)资助. （编号:No.41530315）
