Enargite Cu3AsS4 (Lepanto, Philippines)
Eudialyte Na15Ca6(Fe,Mn)3Zr3(Si,Nb)(Si25O73)(O,OH,H2O)3(Cl,OH)2 (Kipawa, Canada)
Rhodonite (Mn,Ca)5Si5O15 (San Martin Mine, Chiuruu, Ancash, Peru)
Spinel MgAl2O4 (Bo Ploi, Thailand)
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