Any suggestion about mineral with current chemical composition?

Hi All I would appreciate any suggestion about mineral with this EMPA chemical composition. EDS is attached   SiO2     37.23Al2O3   25.29Cr2O3  0.00TiO2     0.03FeO      27.62MgO     5.68MnO    ...

15 July 2017 1,988 24 View