摘要
额尔古纳成矿带浅成热液脉状银（铅锌）矿床以上侏罗统塔木兰沟组中基性火山岩为主要容矿围岩。围岩蚀变特征及银的降低场表明中基性火山岩提供了部分成矿物质。塔木兰沟组中基性火山岩是成矿的必要条件之一。其中发育的退色蚀变带是主要找矿标志。
The hypabyssal vein type Ag(PbZn) deposits in the Ergun ore belt have some similarities in hosted rocks, alterations and so on. Late Jurassic intermediate-basic volcanic rocks of the Tamulangou formation are their major hosted rocks, Most of this type dePOSits exist silver decreasing field which suggests that the volcanic rocks provide some ore-forming materials. Intermediate-basic volcanic rocks of the Tamulangou formation is one of the necessary conditions for mineralization. And its bleached alteration zone could be taken as an important exploration guide.
出处
《矿产勘查》
1995年第6期334-340,共7页
Mineral Exploration
