Kangite is an exceedingly rare scandium mineral, a natural form of impure scandium oxide(Sc2O3), with the formula (Sc,Ti,Al,Zr,Mg,Ca,□)2O3. It crystallizes in the cubic crystal system diploidal class. In terms of chemistry it scandium-analogue of tistarite. Both kangite and tistarite were discovered in the Allende meteorite.
↑Ma, C., Tschauner, O., Beckett, J.R., Rossmann, G.R., and Liu, W., 2013: Kangite, (Sc,Ti,Al,Zr,Mg,Ca,□)2O3, a new ultra-refractory scandia mineral from the Allende meteorite: Synchrotron micro-Laue diffraction and electron backscatter diffraction. American Mineralogist 98(5-6), 870-878