El grup de la röhnita és un grup de minerals que forma part del supergrup de la safirina.[1] Els seus membres són:
Minerals | Fórmula | Simetria |
Dorrita | Ca₄(Mg₃Fe3+9)O₄(Si₃Al₈Fe3+O36) | Tric. |
Høgtuvaïta | Ca₄[Fe2+₆Fe3+₆]O₄[Si₈Be₂Al₂O36] | Tric. 1 : P1 |
Leucorhönita | Ca₂(Mg,Fe3+,Al)₆(Si,Al)₆O20 | Tric. |
Makarochkinita | (Ca,Na)₂Fe2+₄Fe3+Ti[O₂|BeAlSi₄O18] | Tric. 1 : P1 |
Rhönita | Ca₂(Mg,Fe2+,Fe3+,Ti)₆[O₂|(Si,Al)₆O18] | Tric. 1 : P1 |
Serendibita | Ca₄[Mg₆Al₆]O₄[Si₆B₃Al₃O36] | Tric. 1 : P1 |
Welshita | Ca₄Mg9Sb₃O₄[Si₆Be₃AlFe₂O36] | Tric. 1 : P1 |
Referències
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