Davreuxite
Mn2+Al6Si4O17(OH)2 [CNMNC approved formula]
Named for Charles Joseph Davreux (1800-1863), Belgian pharmacist and natural scientist, Professor of Mineralogy at the University of Liµege, Belgium.
| IMA status : | Valid species (Pre-IMA 1878) Grandfathered |
| CLASSIFICATION | |
| Dana (8th edition) : |
58.01.02.01 |
| (58) Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups | |
| (58.01) with cations in [4] and higher coordination; single and double groups (n=1,2) | |
| (58.01.02) | |
| Nickel-Strunz (10th edition) : |
09.BF.15 |
| (09) Silicates | |
| (09.B) Sorosilicates (dimer) structures | |
| (09.BF) Sorosilicates with mixed SiO4 and Si2O7 groups; cations in tetrahedral [4] and greater coordination | |
| Crystal system: | Monoclinic System |
| Point group (H-M): | 2/m — prismatic |