Input interpretation
zharchikhite (mineral)
Image
Image
General properties
formula | AlF(OH)_2 discovery year | 1988
Basic properties
density | 2.81 g/cm^3 transparency | transparent birefringence | 0.035 luster | vitreous Mohs hardness | 4.5 streak | white magnetism | nonmagnetic color | colorless molar mass | 79.99 g/mol (grams per mole)
Units
Mineral identifiers
Strunz ID | III/D.04-05 Dana ID | 10.2.8.1 IMA number | IMA1986-059
Crystallographic properties
crystal system | monoclinic crystal class | 2/m unit cell volume | 188.1 Å^3 (cubic ångströms) d-spacing | 3.98 Å (ångströms) | 1.833 Å (ångströms) | 2.92 Å (ångströms) intensity | 100% | 90% | 80% molecules per unit cell | 4 molecules per cell 2V angle | 4 π/9 radians≈80° (degrees) refractive indices | 1.532 | 0 | 0 | 0 | 0 | 0 dispersion | moderate unit cell lengths | 5.164 Å (ångströms) | 7.843 Å (ångströms) | 5.179 Å (ångströms) unit cell angles | 90° (degrees) | 116.2° (degrees) | 90° (degrees)
Wikipedia summary
Zharchikhite is a halide mineral, a hydroxyl fluoride of aluminium; formula AlF(OH)_2. It forms colourless, transparent crystals. Discovered in 1968, it is named after its original locality, the Zharchinskoya Deposit, which is in Buryatia, Russia.