Global InformationManganvesuvianite information
| Manganvesuvianite | |
|---|---|
 Manganvesuvianite from Wessels Mine, Northern Cape Province, South Africa (4.2 x 3.9 x 3.3 cm) | |
| General | |
| Category | Sorosilicates |
| Formula (repeating unit) | Ca19Mn3+(Al,Mn3+,Fe3+)10(Mg,Mn2+)2(Si2O7)4(SiO4)10O(OH)9 |
| IMA symbol | Mnves[1] |
| Strunz classification | 9.BG.35 |
| Dana classification | 58.02.04.04[2] |
| Crystal system | Tetragonal |
| Crystal class | Dipyramidal (4/m) (same H-M symbol) |
| Space group | P4/n |
| Unit cell | a = 15.575 Å, c = 11.824 Å, Z = 2 |
| Identification | |
| Color | Deep red-brown, red, nearly black |
| Cleavage | None observed |
| Fracture | Conchoidal |
| Mohs scale hardness | 6 to 7 |
| Luster | Vitreous |
| Streak | White |
| Diaphaneity | Transparent, translucent, opaque |
| Optical properties | Uniaxial (-) |
| Refractive index | nω = 1.735, nε = 1.724 |
| Birefringence | δ = 0.012 |
| Pleochroism | Strong |
| References | [3] |
Manganvesuvianite is a rare mineral with formula Ca19Mn3+(Al,Mn3+,Fe3+)10(Mg,Mn2+)2(Si2O7)4(SiO4)10O(OH)9. The mineral is red to nearly black in color. Discovered in South Africa and described in 2002, it was so named for the prevalence of manganese in its composition and its relation to vesuvianite.
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ "Manganvesuvianite". Webmineral. Retrieved July 22, 2012.
- ^ "Manganvesuvianite". Mindat. Retrieved July 22, 2012.