DOI:
矿床地质:1994,Vol.>>Issue(2):126-136

四川会东大梁子铅锌矿床成因新探
地矿部成都地质矿产研究所
Some new opinions on the genesis of the Daliangzi lead-zinc deposit, Huidong County, Sichuan Province
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中文摘要:对大梁子铅锌矿床控矿因素和地球化学的研究认为,矿区内重要的容矿构造为“黑破带”,系由富含有机碳的成矿流体经改造叠加而发生黑色碳化的张性断裂破碎带。该矿床为大气降水及地层水溶滤基底岩系中的金属组分与盖层中海相硫酸盐的流体形成的混源后生矿床。深大断裂、基底断裂起导矿-控矿作用。
Abstract:Through research work on the Daliangzi ore deposit, lots of geologists have put forward such genetic viewpoints as sedimentary-reformation, sedimentary-reconstruction and karst cave accumulation, with ore-forming metals being generally considered to be derived from Dengying Formation. Based on investigations on ore-control factors, geochemical characteristics and genesis of the ore deposit, the present paper points out that the basement rocks and structure played all important role in mineralization, considering that the ”black fractural zone”, which is closely related to the orebodies and has ore-prospecting significance, resulted from reformation and strong carbonization of the faulted structural shatter zone controlled by basement fractures through the action of ore-forming fluids rich in organic carbon rather than from karst deposition. The formation of the ore deposit might be attributed to the meteoric water which leached metals from such basement sequences as Huili Group and Kunyang Group and sulfates from the sedimentary capping bed. The Ganluo-Xiaojiang deep fracture and the EW-trending Jinsuoqiao fracture might have served as important channelways for the migration of ore fluids, and the ore-forming process took place probably later than Permian.
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基金项目:地矿部定向基金项目“康滇地轴东缘铅锌矿”
引用文本:
林方成.1994.四川会东大梁子铅锌矿床成因新探[J].矿床地质,13(2):126~136
.1994.Some new opinions on the genesis of the Daliangzi lead-zinc deposit, Huidong County, Sichuan Province[J].Mineral Deposits13(2):126~136
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