Niobokupletskite
K2NaMn2+7(NbTi)(Si4O12)2O2(OH)4O [CNMNC approved formula]
Named as the Nb analog of kupletskite.
| IMA status : | Approved Species 1999 () |
| CLASSIFICATION | |
| Dana (8th edition) : |
69.01.01.08 (This Dana# Added) |
| (69) Inosilicate Chains with Side Branches or Loops | |
| (69.01) with (P=2, and N=4, 2 branches) | |
| (69.01.01) Astrophyllite group | |
| Nickel-Strunz (10th edition) : |
09.DC.0 |
| (09) Silicates | |
| (09.D) Inosilicates* Structural terminology per Liebau (1985) | |
| (09.DC) with branched 2-periodic single chains; Si2O6 + 2SiO3 Si4O12 | |
| Crystal system: | Triclinic System |
| Point group (H-M): | 1 — pinacoidal |