摘要
本文对广西大厂锡多金属矿区容矿岩石内含有钙长石大晶体岩石的岩石学、钙长石的产状、钙长石及有关矿物的成分特征等作了较为细致的研究,对其自生成因的机理进行了探讨,阐明了成岩作用对矿床的形成有着重要的地质意义。
Through a study of the petrology ot nost rocks which contain anorthite mega-crysts of occurrence of anorthite and chemical composition of anorthite and related minerals, the authors consider that anorthite megacrysts are authigenic.Anorthite occurs along the bedding in structural zones of weakness and is not restricted within the synsedimentary slumping structure. These features of distribu-tion and the relationship of some elements between anorthite and other minerals indicate that anorthite is the product of reaction of circulating alkaline solutions rich in Al and Si with carbonates during the period of the Indosinian orogeny.The results of this work suggest that the association of authigenic anorthite with bedded orebodies in the Dachang ore district may serve as the evidence that the mineralization is related to the circulation underground hot water.
出处
《地质论评》
CAS
CSCD
北大核心
1994年第3期209-215,T001,共8页
Geological Review
基金
德方CDG基金会
中方地质行业基金
