Guimaraesite
Ca2Zn5Be4(PO4)6(OH)4 • 6H2O [CNMNC approved formula]
Named Commission on New Minerals, Nomenclature and Classification (CNMNC).
| IMA status : | Approved Species 2006 () |
| CLASSIFICATION | |
| Dana (8th edition) : |
42.07.07.06 |
| (42) Hydrated Phosphates Containing Hydroxyl or Halogen | |
| (42.07) where (AB)5 (XO4)3 Zq · x(H2O) | |
| (42.07.07) Roscherite group | |
| Nickel-Strunz (10th edition) : |
08.DA.10 |
| (08) Phosphates, Arsenates, Vanadates | |
| (08.D) Phosphates, etc | |
| (08.DA) With small (and occasionally larger) cations | |
| Crystal system: | Monoclinic System |
| Point group (H-M): | 2/m — prismatic |