Study on modes of occurrence of scandium in granite pegmatite from Yingjiang,Yunnanprovince

Scandium is a kind of sparsity and spread around element which is mostly exists in other minerals in the form of isomorphism-phase while itsindependent minerals are extremely rare.It is the superior performance that the scandium have broad application prospects,but its research is still at the initial stage.In this paper,chemicalanalysis,polished section identification,scanning electron microscopeand microscope electrical probe analysis was applied to measure the occurrence of scandium in granite pegmatite from Yingjing,Yunnanprovince.It was obtained that scandium containing mineral mainly for the mica group minerals with a content of 44.80 ppm,secondly is clay minerals with a content of 19.20 ppm and feldspathoid with a content of 0.25 ppm.The scandium mainly Dispersed in the mica group minerals,feldspathoid minerals,amphibole,clayminerals,sphene and ilmenite minerals while the biotite is the major scandiumcarrier.Microscope electrical probe analysis shows that biotitein granitic pegmatite is scandium-bearing in general,so that scandium can be extracted by sorting biotite from granitic pegmatite.High content of scandium existed in granitic pegmatite shows a excellent scandium searching exploration prospect in this district.Moreover,the author puts forward that mineral processing workers should be actively to looking for an efficient extraction of scandiumto get cost reduction so that the scandium can be achieve efficient use.