Input interpretation
adelite (mineral)
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General properties
formula | CaMg(AsO_4)(OH) discovery year | 1891
Basic properties
density | 3.76 g/cm^3 transparency | transparent birefringence | 0.019 luster | resinous Mohs hardness | 5 streak | white magnetism | nonmagnetic color | blue gray | green | gray | yellow | light green fracture | conchoidal molar mass | 220.3 g/mol (grams per mole)
Units
Mineral identifiers
Strunz ID | VII/B.26-10 Dana ID | 41.5.1.1
Crystallographic properties
crystal system | orthorhombic crystal class | 222 unit cell volume | 389.6 Å^3 (cubic ångströms) d-spacing | 3.16 Å (ångströms) | 2.59 Å (ångströms) | 4.13 Å (ångströms) intensity | 100% | 70% | 70% molecules per unit cell | 4 molecules per cell 2V angle | 79 π/180 radians≈79° (degrees) refractive indices | 1.712 | 0 | 0 | 0 | 0 | 0 dispersion | strong unit cell lengths | 7.525 Å (ångströms) | 8.85 Å (ångströms) | 5.85 Å (ångströms) unit cell angles | 90° (degrees) | 90° (degrees) | 90° (degrees)
Wikipedia summary
The rare mineral adelite, is a calcium, magnesium, arsenate with chemical formula CaMgAsO_4OH. It forms a solid solution series with the vanadium-bearing mineral gottlobite. Various transition metals substitute for magnesium and lead replaces calcium leading to a variety of similar minerals in the adelite - duftite group.