摘要
本文利用EPMA和AEM对预先富集的碳质体中的微细粒金的赋存状态进行了研究，结果表明金均以偏小的高成色金胶粒被非晶态的碳质体吸附、包裹乃至碳质与之形成碳壳。由研究结果认为：①碳质中金可能析出于胶体凝聚作用；②应该注意有机质以机械方式搬运金粒的可能性；③碳质包裹金粒及在金粒表面形成碳壳是碳质体与金紧密结合的表现形式。
In this paper EPMA and AEM are used to investigate the occurrence of micro-fine gold in car-bonaceous matter. Very small -sized and high-purity gold colloids were found adsorbed on or em-braced in amorphous carbonaceous bodies. The conclusious may be drawn as follows:1. Micro-fine gold may undcrgo a process of colloidal condensation before gold is separated outof carbonaceous matter.2. There exists sueh a possibility that gold particles may be transported mechanically by or-ganic matter.3. The fact that gold particles arc embraced in carbonaceous matter and form caroonaceouscrust indicates that micro- fine gold has a closc relationship with organic matter.
出处
《矿物学报》
CAS
CSCD
北大核心
1995年第3期276-280,共5页
Acta Mineralogica Sinica
基金
国家自然科学基金
