Strakhovite
NaBa3(Mn2+,Mn3+)4[Si4O10(OH)2][Si2O7]O2 • (F,OH) • H2O [CNMNC approved formula]
Named for N. M Strakhov (1900-1978), for his contributions to the study of sedimentary ore deposits and phosphorites.
| IMA status : | Approved Species 1994 () |
| CLASSIFICATION | |
| Dana (8th edition) : |
64.03.02.01 |
| (64) Cyclosilicates | |
| (64.03) 4-membered rings with [Si2O7] dimers | |
| (64.03.02) | |
| Nickel-Strunz (10th edition) : |
09.CF.20 |
| (09) Silicates | |
| (09.C) Cyclosilicates | |
| (09.CF) [Si4O12]8- 4-membered single rings, with insular complex anions | |
| Crystal system: | Orthorhombic System |
| Point group (H-M): | mmm (or 2/m 2/m 2/m) — dipyramidal |