| Metazeunerite | |
|---|---|
 | |
| General | |
| Category | Phosphate minerals |
| Formula (repeating unit) | Cu(UO2)2(AsO4)2·8H2O |
| IMA symbol | Mzeu[1] |
| Strunz classification | 8.EB.10 |
| Crystal system | Tetragonal |
| Crystal class | Dipyramidal (4/m) (same H-M symbol) |
| Space group | P4/n |
| Unit cell | a = 7.1094 Å, c = 17.416 Å; Z = 2 |
| Identification | |
| Color | Varies from pale to green |
| Crystal habit | Tabular rectangular crystals with two pinacoid faces; foliated or micaceous aggregates |
| Twinning | Merohedrally twinned |
| Cleavage | Perfect on {001}; distinct on {010} |
| Fracture | Uneven |
| Tenacity | Brittle |
| Mohs scale hardness | 2–2.5 |
| Luster | Vitreous to dull |
| Streak | Pale green |
| Diaphaneity | Transparent to translucent |
| Specific gravity | 3.87 |
| Optical properties | Uniaxial (−) |
| Refractive index | nw = 1.643–1.651 nε = 1.623–1.635 |
| Birefringence | .020 |
| Pleochroism | Weak |
| Solubility | Soluble in acids |
| Other characteristics |  Radioactive,Relief: moderate |
| References | [2][3][4] |
Metazeunerite is an arsenate mineral with a chemical formula of Cu(UO2)2(AsO4)2·8H2O. The origin of this mineral is almost always from the natural dehydration process of zeunerite.[5]
It is named for civil engineer Gustav A. Zeuner, who worked at the School of Mines in Freiberg and its lowered hydration state.[4]
- ^ 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.
- ^ Mineralienatlas
- ^ Metazeunerite Mineral Data Webmineral
- ^ a b Metazeunerite on Mindat
- ^ Amethyst Galleries