Reinerite
Reinerite is a rare arsenite (arsenate(III)) mineral with chemical formula Zn3(AsO3)2. It crystallizes in the orthorhombic crystal system.
| Reinerite | |
|---|---|
| General | |
| Category | arsenite |
| Formula (repeating unit) | Zn3(AsO3)2 |
| IMA symbol | Rnr |
| Strunz classification | 4.JA.10 |
| Crystal system | Orthorhombic |
| Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
| Space group | Pbam (no. 55) |
| Unit cell | a = 6.092 Å, b = 14.407 Å c = 7.811 Å; Z = 4 V = 685.55 a:b:c = 0.423 : 1 : 0.542 |
| Identification | |
| Color | Sky blue, yellow green |
| Crystal habit | Rough striated pseudohexagonal crystals |
| Cleavage | Good on {110}, {011} and {111} |
| Mohs scale hardness | 5 - 5.5 |
| Luster | Vitreous to adamantine |
| Diaphaneity | Transparent |
| Specific gravity | 4.27 |
| Optical properties | Biaxial (-) |
| Refractive index | nα = 1.740 nβ = 1.790 nγ = 1.820 |
| Birefringence | Maxium δ = 0.080 |
| Other characteristics | Relief: very high |
| References | |
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