Combination features and exploration significance of natural heavy minerals from tungsten deposits

To investigate the combination characteristics of the natural placer minerals reflected by different types of tungsten deposits, the authors gathered statistic data of the occurrence situation of 61 typical tungsten deposits (mining areas) from 13 provinces or autonomous region, i.e., Zhejiang, Hunan, Jiangxi, Hubei, Xinjiang, Qinghai, Yunnan, Guangxi, Fujian, Henan, Guizhou, Anhui and Guangdong, calculated the frequencies of occurrence of many kinds of natural heavy minerals, and worked out the mineral assemblage of skarn, hydrothermal and porphyry tungsten as well as the typomorphic minerals. The results indicate that different types of mineral assemblages has both similarities and their respective standard types. The assemblage of natural heavy mineral and its content variation established by the deposit type are of great significance for the building of natural placer prospecting model.