NN | Card | Specie | Formula | Space Group |
---|---|---|---|---|
1. | 506 | [11], anhydrous, t-beryl | Al1.9Cr0.1[Be3Si6]O18 | P 6/mcc |
2. | 507 | [12], hydrous, t-beryl | Al1.9Cr0.1[Be3Si6]O18 · H2O | P 6/mcc |
3. | 8421 | [17], t-beryl, syn | (Al,Mg,Cr)2[Be2.74Al0.30Si5.97]O18 | P 6/mcc |
4. | 8422 | [18], t-beryl, syn, DN | K0.02(Al,Mg,Cr)2[Be2.88Al0.16Si5.97]O18 | P 6/mcc |