摘要
矿源层中金的原始丰度高。岩石中金的活度与丰度有关。矿源层与非矿源层的同类岩石,除均含有数量大致相当的造岩矿物中背景量级的金外,矿源层比非矿源层多含了一部分活化金。矿源层是某些类型金矿成矿的必要条件之一。
The gold in its source bed usually has a higher primary abundance and the activity of gold inrocks has a bearing on the abundance.Either the source bed or the non-source bed consisted of similarrocks possesses a certain amount of gold equivalent to the background level of that in ore-forming mine-rals.The feature of the source bed is the essential condition for the formation of gold deposits of cer-tain types.
出处
《地质与勘探》
CAS
CSCD
北大核心
1992年第4期43-46,共4页
Geology and Exploration
