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在对西盟锡矿Ⅲ号矿体进行岩矿测试工作中,发现具经济意义的以锡石——毒砂——带云母组合为特征的锡矿石类型。带云母在国内尚未见报道,锡石——毒砂——带云母型锡矿石在国内外尚未见报道。西盟的带云母是一种富锂镁贫铁的热液充填交代的产物。它呈鳞片集合体,与毒砂、锡石、石英及部分电气石(交代残余)、硫化物伴生。标本上呈很淡的棕黄色;镜下显无色,部份具弱多色性,Np为无
In a rock and mine test of orebody No.10 of the Ximeng Tinfield, an economically significant type of tin ore characterized by a cassiterite-arsenopyrite-mica combination was found. With mica in the country has not been reported, cassiterite - arsenopyrite - with mica-type tin ore at home and abroad have not yet been reported. The mica in the Western Union is a product of hydrothermal filling of lithium-rich magnesium-poor iron. It is a collection of scales, and arsenopyrite, cassiterite, quartz and some tourmaline (account of residual), sulfide associated. Specimens showed a very pale brown; microscope was colorless, some with weak polychromatic, Np is no