Input interpretation
rokühnite (mineral) | orlandiite (mineral)
Image
Image
General properties
| rokühnite | orlandiite alternate names | rokuehnite | (none) formula | Fe^(2+)Cl_2·(H_2O) | Pb_3(Cl, OH)_4(SeO_3)·(H_2O)
Basic properties
| rokühnite | orlandiite density | 2.35 g/cm^3 | 5.79 g/cm^3 transparency | transparent | translucent birefringence | 0.097 | luster | | vitreous | silky streak | | white magnetism | nonmagnetic | nonmagnetic color | colorless | colorless | white fracture | | brittle molar mass | 144.8 g/mol | 899.2 g/mol
Units
Mineral identifiers
| rokühnite | orlandiite Strunz ID | III/A.12-50 | IV/J.01-30 Dana ID | 9.2.4.1 | 12.1.10.1 IMA number | IMA1979-036 | IMA1998-035 | IMA1998-038
Crystallographic properties
| rokühnite | orlandiite crystal system | monoclinic | triclinic crystal class | 2/m | 1 unit cell volume | 225.5 Å^3 (cubic ångströms) | 515.6 Å^3 (cubic ångströms) d-spacing | 5.53 Å (ångströms) | 2.762 Å (ångströms) | 4.228 Å (ångströms) | 4 Å (ångströms) | 3.258 Å (ångströms) | 3.188 Å (ångströms) | 3.818 Å (ångströms) | 3.731 Å (ångströms) | 2.103 Å (ångströms) | 2.728 Å (ångströms) | 2.365 Å (ångströms) | 8.09 Å (ångströms) intensity | 100% | 70% | 60% | 100% | 75% | 75% | 55% | 44% | 40% | 38% | 37% | 36% molecules per unit cell | 2 molecules per cell | 2 molecules per cell 2V angle | 11 π/30 radians≈66° (degrees) | refractive indices | 1.605 | 0 | 0 | 0 | 0 | 0 | 0 | 1.96 | 0 | 0 | 0 | 0 dispersion | strong | strong unit cell lengths | 7.396 Å (ångströms) | 8.458 Å (ångströms) | 3.638 Å (ångströms) | 8.146 Å (ångströms) | 8.428 Å (ångströms) | 9.241 Å (ångströms) unit cell angles | 90° (degrees) | 97.68° (degrees) | 90° (degrees) | 62.32° (degrees) | 71.64° (degrees) | 75.22° (degrees)