NN | Card | Specie | Formula | Space Group |
---|---|---|---|---|
1. | 616 | [1], t-braunite | Mn2+Mn3+6SiO12 | *I 4(1)/acd |
2. | 617 | [2], t-braunite, Ca, Fe | Ca0.92[Mn11.72Fe2.34]Si1.12O24 | *I 4(1)/acd |
3. | 618 | [3], t-braunite, Mg, Ca | (Mn2+,Mg,Ca)(Mn3+,Fe)6SiO12 | *I 4(1)/acd |
4. | 619 | [4] | Mn2+Mn3+6SiO12 | I 4(-)c2 |