Vesuvianite
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 [CNMNC approved formula]
Named after its locality: Mte. Somma, Vesuvius, Italy.
| IMA status : | Approved Species 1795 () |
| CLASSIFICATION | |
| Dana (8th edition) : |
58.02.04.01 |
| (58) Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups | |
| (58.02) with cations in [6] and higher coordination; single and double groups (n=1,2) | |
| (58.02.04) Vesuvianite Group | |
| Nickel-Strunz (10th edition) : |
09.BG.35 |
| (09) Silicates | |
| (09.B) Sorosilicates (dimer) structures | |
| (09.BG) Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination | |
| Crystal system: | Tetragonal System |
| Point group (H-M): | 4/m — dipyramidal |
| Other Properties: | Gemstone Rare. |