广西云开地区金银矿成矿地质特征及找矿远景

广西云开地区属我国粤西—桂东重要的金银多金属成矿带，区内有金银矿床（点）近８０处，受博白—岑溪深断裂带控制，产于前寒武系变质—混合杂岩内，沿ＮＥ、ＮＮＥ向呈带状展布。在论述该区金银矿成矿地质背景基础上，分析了构造控矿特征，赋矿地层及岩浆演化与金银矿化的关系，矿床成因类型及典型矿床地质特征，矿化富集规律等矿床地质特征。在总结该区金银矿成矿条件、找矿标志的基础上指出了找矿远景。

METALLOGENETIC CHARACTERISTICS AND EXPLORATION PROSPECTS OF GOLD-SILVER DEPOSITS IN YUNKAI PROVINCE IN GUANGXI

Yunkai province in Guangxi belongs to the important gold-silver multimetal metallogenetic zones in western Guangdong and eastern Guangxi. In this province, there have been found near 80 deposits (or occurrences) controlled by Bobai-Cenxi deep fracture zone, occurring in metamorphic-mixed complex and extending along NE or NNE direction as belts. On the basis of discussion on the metallogenetic background in this province, the author analyses the geological characteristics of these deposits such as the relations between gold-silver metallization and the characteristics of structure-controlling deposits, ore-bearing strata and magma evolution; the genetic type of these deposits, the geological characteristics of typical deposits and the metallizing concentration laws etc.. He points out the exploration prospects based on summarizing the metallogenetic conditions of these deposits and prospecting guide in this province.