Input interpretation
herbertsmithite (mineral) | asisite (mineral)
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General properties
| herbertsmithite | asisite alternate names | anarakite | (none) formula | Cu_3Zn(OH)_6Cl_2 | Pb_12(SiO_4)O_8Cl_4 discovery year | 1972 | 1988
Basic properties
| herbertsmithite | asisite density | 3.85 g/cm^3 | 7.94 g/cm^3 transparency | transparent | transparent birefringence | 0.008 | 0.07 luster | vitreous | adamantine Mohs hardness | 3.25 | 3.5 tenacity | brittle | streak | green | yellow white magnetism | nonmagnetic | nonmagnetic color | dark green | blue green | green yellow | yellow fracture | brittle | molar mass | 430.3 g/mol | 1652 g/mol
Units
Mineral identifiers
| herbertsmithite | asisite Strunz ID | III/D.01-57 | III/D.11-50 Dana ID | 10.1.2.3 | 10.2.7.1 IMA number | IMA2003-041 | IMA1987-003 ICSD number | | ICSD202630
Crystallographic properties
| herbertsmithite | asisite crystal system | trigonal | tetragonal crystal class | -32/m | 4/m2/m2/m unit cell volume | 569.3 Å^3 (cubic ångströms) | 345.6 Å^3 (cubic ångströms) d-spacing | 2.764 Å (ångströms) | 5.466 Å (ångströms) | 2.266 Å (ångströms) | 1.709 Å (ångströms) | 4.702 Å (ångströms) | 1.82 Å (ångströms) | 2.73 Å (ångströms) | 2.899 Å (ångströms) | 2.957 Å (ångströms) | 1.627 Å (ångströms) | 2.752 Å (ångströms) intensity | 100% | 55% | 36% | 18% | 14% | 13% | 13% | 11% | 100% | 60% | 60% molecules per unit cell | 3 molecules per cell | 1 molecule per cell refractive indices | 0 | 0 | 0 | 0 | 1.817 | 0 | 0 | 0 | 0 | 0 | 2.32 | 0 unit cell lengths | 6.834 Å (ångströms) | 14.08 Å (ångströms) | 14.08 Å (ångströms) | 3.893 Å (ångströms) | 3.893 Å (ångströms) | 22.8 Å (ångströms) unit cell angles | 90° (degrees) | 90° (degrees) | 120° (degrees) | 90° (degrees) | 90° (degrees) | 90° (degrees)
Wikipedia summary
Herbertsmithite
Herbertsmithite is a mineral with chemical structure ZnCu_3(OH)_6Cl_2. It is named after the mineralogist Herbert Smith (1872-1953) and was first found in 1972 in Chile. It is polymorphous with kapellasite and closely related to paratacamite. Herbertsmithite is generally found in and around Anarak, Iran, hence its other name, anarakite.
Asisite
Asisite (Pb_7SiO_8Cl_2) is a yellow tetragonal mineral. It is found at Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia. It was named for a farm, Asis, which covers the mine where it was found. It was discovered in 1988.