摘要
研究了西坑银矿床的矿体形态，矿石组成、结构、构造，成矿物理化学条件，银的赋存状态，矿区岩浆作用等矿床地质特征。研究了矿区及外围地层地球化学。通过地层地球化学和矿床地质特征的综合分析研究认为，从矿化前的热变质作用、矿化早期的透闪石和透辉石化，到晚期的硫化物矿化，是一次岩浆活动热事件引起的连续地质作用过程，成矿物质主要来源于岩浆流体，酸性的岩浆流体沿层间破碎带上升时。
This paper studies the deposit′s geological characteristics such as the shape of silver ore body,ore composition, texture and structure,ore forming physical and chemical condition ,existing forms of silver in the ore,and magmatism at the mine area.The stratous geochemistry of the mine area and far from the mine area is also studied. According to the study of the stratous geochemistry and geological characteristic of the deposit,the author thinks that it is a continuous process of thermal event of magmatism from thermal metamorphism of pro metallizing,tremolite diopside forming at early term to sulfidization at late term.The ore forming material comes from magmatic fluid.While acid magmatic fluid rises along zone of fracture in the mid stratum, the ore forming material fills up the fracture because of the reaction between the magmatic fluid and rock which is high active and rich incarbonate.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
1999年第5期99-102,共4页
Journal of Hefei University of Technology：Natural Science
关键词
银矿床
岩浆流体
矿床地质
成因
矿体形态
Southern Anhui Province
silver deposit
magmatic fluid
geology of deposit
