Abswurmbachite
Abswurmbachite is a copper manganese silicate mineral ((Cu,Mn2+)Mn3+6O8SiO4). It was first described in 1991 and named after Irmgard Abs-Wurmbach (born 1938), a German mineralogist. It crystallizes in the tetragonal system. Its Mohs scale rating is 6.5 and a specific gravity of 4.96. It has a metallic luster and its color is jet black, with light brown streaks.
| Abswurmbachite | |
|---|---|
| General | |
| Category | Nesosilicate |
| Formula (repeating unit) | (Cu,Mn2+)Mn3+6O8SiO4 |
| IMA symbol | Abs[1] |
| Strunz classification | 9.AG.05 |
| Dana classification | 7.5.1.4 |
| Crystal system | Tetragonal |
| Crystal class | 4/mmm - Ditetragonal dipyramidal |
| Identification | |
| Color | Black |
| Cleavage | None |
| Tenacity | Brittle |
| Mohs scale hardness | 6.5 |
| Luster | Metallic |
| Streak | Brownish black |
| Specific gravity | 4.96 g/cm3 |
| Density | 4.96 g/cm3 |
| Common impurities | Iron |
| References | [2] |
References
- 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.
- "Abswurmbachite". mindat.org. Retrieved 18 February 2022.
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