Guerinite
Ca5(AsO3OH)2(AsO4)2 • 9H2O [CNMNC approved formula]
Named for H. Guerin.
| IMA status : | Valid species (Pre-IMA 1961) Grandfathered |
| CLASSIFICATION | |
| Dana (8th edition) : |
39.02.02.02 |
| (39) Hydrated Acid Phosphates | |
| (39.02) H2 (AB)5 (XO4)4 · x(H2O) | |
| (39.02.02) | |
| Nickel-Strunz (10th edition) : |
08.CJ.75 |
| (08) Phosphates, Arsenates, Vanadates | |
| (08.C) Phosphates without Additional Anions, with H2O | |
| (08.CJ) With only large cations | |
| Crystal system: | Monoclinic System |
| Point group (H-M): | 2/m — prismatic |