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The major concern of this paper is with allophane(m Al2O3.n SiO2.p H2O),a colloid mineral from a certain locality in China,which is surperfaeial in origin and may be used as an indicator to eluvial deposits enriched in Cu,U,V,Detailed studies have been carried out on its features,the forming environments,the factors governing its enrichment,and mineral associations by means of field investigation,microscopie identification,chemical analysis and DTA technique. 相似文献
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下拉地银铅矿是一个中型热液矿床,先后由甘肃地质局甘南队、第三地质队对该矿区及其以西的窑沟矿点进行过普查、勘探工作,并提变了一定的铅、硫、银储量,我们在此基础上,曾对该矿床进行了一定工作,现提出一些与前人不同的认识,以供讨论。 相似文献
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