Input interpretation
aluminocopiapite (mineral)
General properties
formula | Al_(2/3)Fe^(3+)_4(SO_4)_6O(OH)_2·20(H_2O) discovery year | 1947
Basic properties
density | 2.18 g/cm^3 transparency | transparent | translucent birefringence | 0.0625 luster | vitreous Mohs hardness | 2.75 tenacity | fragile streak | light yellow magnetism | nonmagnetic color | yellow molar mass | 1212 g/mol (grams per mole)
Units
Mineral identifiers
Strunz ID | VI/D.10-80 Dana ID | 31.10.5.7
Crystallographic properties
crystal system | triclinic crystal class | 1 unit cell volume | 923.8 Å^3 (cubic ångströms) d-spacing | 9.2 Å (ångströms) | 5.58 Å (ångströms) | 18.1 Å (ångströms) intensity | 100% | 80% | 80% molecules per unit cell | 1 molecule per cell 2V angle | 17 π/72 radians≈85/2° (degrees) refractive indices | 1.529 | 0 | 0 | 0 | 0 | 0 dispersion | none unit cell lengths | 7.251 Å (ångströms) | 18.16 Å (ångströms) | 7.267 Å (ångströms) unit cell angles | 93.98° (degrees) | 102.3° (degrees) | 97.97° (degrees)