Input interpretation
allactite (mineral) | zellerite (mineral)
Image
Image
General properties
| allactite | zellerite alternate names | allaktite | elfstorpite | (none) formula | Mn_7(AsO_4)_2(OH)_8 | Ca(UO_2)(CO_3)_2·5(H_2O) discovery year | 1884 | 1963
Basic properties
| allactite | zellerite density | 3.83 g/cm^3 | 3.25 g/cm^3 transparency | translucent | translucent birefringence | 0.019 | 0.161 luster | vitreous | greasy | dull Mohs hardness | 4.5 | 2 tenacity | brittle | streak | grayish | faint brown | white magnetism | nonmagnetic | nonmagnetic color | brown red | greenish brown | purple red | pink | white yellow | lemon fracture | irregular | uneven | molar mass | 798.5 g/mol | 520.2 g/mol
Units
Mineral identifiers
| allactite | zellerite Strunz ID | VII/B.15-50 | V/F.02-60 Dana ID | 41.2.1.1 | 15.3.1.1 IMA number | | IMA1965-031
Crystallographic properties
| allactite | zellerite crystal system | monoclinic | orthorhombic crystal class | 2/m | mm2 | 2/m2/m2/m unit cell volume | 672.5 Å^3 (cubic ångströms) | 1066 Å^3 (cubic ångströms) d-spacing | 3.06 Å (ångströms) | 3.71 Å (ångströms) | 3.28 Å (ångströms) | 9.66 Å (ångströms) | 4.85 Å (ångströms) | 5.59 Å (ångströms) intensity | 100% | 65% | 55% | 100% | 50% | 35% molecules per unit cell | 2 molecules per cell | 4 molecules per cell 2V angle | π/10 radians≈18° (degrees) | 13 π/60 radians≈39° (degrees) refractive indices | 1.755 | 0 | 0 | 0 | 0 | 0 | 1.536 | 0 | 0 | 0 | 0 | 0 dispersion | r > v | strong | r > v unit cell lengths | 11.03 Å (ångströms) | 12.12 Å (ångströms) | 5.51 Å (ångströms) | 11.22 Å (ångströms) | 19.25 Å (ångströms) | 4.933 Å (ångströms) unit cell angles | 90° (degrees) | 114.1° (degrees) | 90° (degrees) | 90° (degrees) | 90° (degrees) | 90° (degrees)