Input interpretation
andradite (mineral)
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General properties
alternate names | allochroite | andradite garnet | aplome | demantoid-green | jellelite | jellesite | jelletite | kalkeisentongranat | melanite | polyadelphine | polyadelphite | rothoffite | yttergranat formula | Ca_3Fe^(3+)_2(SiO_4)_3 discovery year | 1868
Basic properties
density | 3.9 g/cm^3 transparency | transparent | translucent birefringence | 0 luster | adamantine | resinous | dull Mohs hardness | 6.75 tenacity | brittle streak | white magnetism | nonmagnetic color | black | yellowish brown | red | greenish yellow | gray fracture | conchoidal molar mass | 508.2 g/mol (grams per mole)
Units
Mineral identifiers
Strunz ID | VIII/A.08-110 Dana ID | 51.4.3b.1
Crystallographic properties
crystal system | cubic crystal class | 4/m-32/m unit cell volume | 1750 Å^3 (cubic ångströms) d-spacing | 2.696 Å (ångströms) | 1.611 Å (ångströms) | 3.015 Å (ångströms) intensity | 100% | 60% | 60% molecules per unit cell | 8 molecules per cell refractive indices | 0 | 0 | 0 | 0 | 0 | 1.887 dispersion | weak unit cell lengths | 12.05 Å (ångströms) | 12.05 Å (ångströms) | 12.05 Å (ångströms) unit cell angles | 90° (degrees) | 90° (degrees) | 90° (degrees)
Wikipedia summary
Andradite is a species of the garnet group. It is a nesosilicate, with formula Ca_3Fe_2Si_3O_12.