Vuagnatite
CaAlSiO4(OH) [CNMNC approved formula]
Named for Mark Bernard Vuagnat (1922- ), student of ophiolites, University of Geneva, Geneva, Switzerland.
| IMA status : | Approved Species 1976 () |
| CLASSIFICATION | |
| Dana (8th edition) : |
52.04.02.02 |
| (52) Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O | |
| (52.04) with cations in [6] and/or > [6] coordination | |
| (52.04.02) Vuagnatite group | |
| Nickel-Strunz (10th edition) : |
09.AG.60 |
| (09) Silicates | |
| (09.A) Nesosilicates (Isolated tetrahedron) structures | |
| (09.AG) Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination | |
| Crystal system: | Orthorhombic System |
| Point group (H-M): | 222 — disphenoidal |