西准噶尔发现新的金矿化类型——自然金赋存于黑云母中

The New Gold Mineralization Types Discovered in West Junggar Region——Native Gold Occurrence of The Biotite

通过光薄片镜下鉴定和电子探针成分分析,发现自然金赋存于黑云母中,为西准噶尔地区一种新的金矿化类型。该自然金成色高,Fe含量高,部分自然金中未见Ag。通过对含金黑云母的面扫描分析发现,部分含金黑云母中存在不可见自然金。对该区的自然金成因提出2种推论:岩浆成因和热液成因,二者均存在一些疑点。

Native gold occurrence of the biotite is a new gold mineralization types discovered in West junggar region.By electron probe micro-analyzer found:the native gold has high gold fineness and Fe,and Ag is not seen in part of the native gold.Invisible native gold exists in biotite which has native gold occurrenced,but it is not a common phenomenon.In this paper,two inferences about the causes of native gold are magmatic origin and hydrothermal origin,both of them have some suspects.