摘要
砂金矿主要是由砾石、砂、粘土组成的碎屑沉积物,其中含有自然金及其他一些伴生重矿物。本文主要通过对阿尔泰山砂金的理化特征及其伴生矿物进行分析,初步认为阿尔泰山砂金化学成分复杂、粒度、形态各异、成色很高。砂金的理化特征不仅可以反映砂金的成因和形成环境。而且对砂金矿的形成,类型及物源分析也具重要意义。在阿尔泰山部分地区,重矿物组合对寻找砂金可具有指示意义。
The placer-gold is a kind of sedimont which is mainly composed of gravel, sand and clay and contains natural gold and other associated heavy minerals. By analysing the physical and chemical features of placer gold and associated heavy minerals of altai Mt't, the author believe that the placer gold in Altai Mts'. generally has intimate relationship with quartz. The placer gold layer has high content of silt and clay and relatively has more complex chemical compositions, it also has different shape, grain-size and very high fineness. The physical and chemical features of the placer gold not only reflect the formation of placer gold and its environment condition but also have a very important significance to analyse the source of placer gold. The minerals associated with the placer gold have a strong stability, but the placer gold is deficient in typical composition of the associated heavy minerals because of the complexity of placer gold formation and the diversification of the source. The componant of heavy minerals has a instructive sighificance for searching placer gold in parts of Altai Mountains.
出处
《干旱区地理》
CSCD
北大核心
1992年第1期87-91,共5页
Arid Land Geography
