The genetic type of Xiaojiashan molybdenum tungsten deposit belongs to porphyry deposits,with tuffaceous siltstone,tuff and andesite,etc. in Dananhu Group Devonian system Palaeozoic era for its ore strata and lithology; the tungsten ores are formed in the earth surface and shallow regions,while the molybdenum are completely concealed deeply underground,and regularity of ore deposit is that tungsten always on the upper place of molybdenum,they are paragenetic mineral but not connected to each other; there ar...
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