Abnormally enrichment of scandium in weathering crust of the Emeishan Basalt in Dali,central Yunnan
Scandium(Sc)and its compounds have been widely used in scientific,technology and military fields due to the excellent properties,thus Sc has been listed as strategic mineral resource in China.The Sc was found enriched in the weathering crust of the Emeishan basalt in Dali,Yunnan Province,specifically,the average content of Sc is 43.7 μg/g,which is equivalent to scandium oxide(Sc2O3)of 67.01 μg/g.The content of Sc2O3 in the reddish-brown clay layer within the weathering crust is relatively higher at 81.31 μg/g,which reaches the industrial grade of Sc deposit.Sc derived from the parent rock Emeishan basalt is enriched in the weathering products probably due to its low migration ability in the weathering process.Since the Emeishan basalt distributes widely in the Yunnan,Guizhou and Sichuan area,SW China,the Sc-rich basalt weathering crust may become a potential Sc source.
万方数据
维普
