- ulvöspinel: IMA1972-004 Rd) 9.AC.15 [830] [831] [832] (IUPAC: diiron(II)
tetraoxogermanate(IV)) Bru****e (gypsum: 1865) 8.CJ.50 [833] [834] [835] (IUPAC: calcium...
- (topaz: IMA2000-043a) 9.AF.20 [564] [565] [566] (IUPAC:
dialuminium tetraoxogermanate dihydroxyl)
Krinovite (sapphirine: IMA1967-016) 9.DH.40 [567] [568]...