摘要
通过对铜陵地区主要铁铜矿床矿石组构研究表明，石炭系铁铜矿床中存在沉积成岩、热变质及热液充填、交代的矿石组构．结合矿石组分研究认为，铁、硫可能主要与石炭系有关，而铜质在原始沉积时较少，经后生变质改造，尤其是含矿热液的叠加再富集而成矿．该区存在两个系列，即沉积成岩－热变质系列（简称变质型）和热液充填交代系列（简称交代型）矿石，两个系列之矿物演化序列迥然不同，化学成分亦有明显差异。故认为铜陵地区石炭系铁铜（主）矿床属沉积成岩－（岩浆）热液叠加改造型矿床。
The research on the ore fabric of the main copper-iron deposits in the Tongling district indicates that there are sedimentary-diagenetic, thermal metamorphic and metasomatic ore fabric in this district. Combining with the study of the orebody occurrence and ore composition, the authors of this paper consider that iron and sulfur may be related to Carboniferous strata, that copper content is very low in primary sediments, and that they are enriched mainly by metamorphic reformation and especially by (magmatic) hydrothermal superimposition. There are two series in this region, i. e., sedimentary-diagenetic-thermal series (is called metamorphic type for short) and hydrothermal cavity filling-metasomatic series (is called metasomatic type for short). The two series are totally different in mineral evolution and chemical composition. Therefore Carboniferous copper-iron deposits in the Tongling district are to considered belong to a stratabound sham type deposit formed mainly by sedimentary-diagenetic, thermal metamorphic reformation and (magmatic) hydrothermal superimposition.
出处
《成都理工学院学报》
CSCD
1996年第2期7-15,共9页
Journal of Chengdu University of Technology
基金
国家"七五"科技攻关项目
国家教委博士点科学基金
关键词
铁矿床
铜矿床
矿石组构
组分特征
石炭纪
Tongling district
copper-iron deposit
ore fabric
metamorphic type
metasomatic type
