Anhydrite

Химия

IMA chemistry:: Ca(SO4)
Valence chemistry:: CaS6+O4

Классификация

Crystal systems:: orthorhombic
Space groups:: C222, Amma, Bbmm, Bmmb
Structural group:: Not in a structural group
IMA status:: Approved, Grandfathered

Происхождение

Country:: Austria
Published:: 1794
Oldest age Ma:: 2816
Paragenetic modes:: Abiotic, Biotic, Primary, Secondary, Stage 2: Planetesimal differentiation & alteration, PM6 - Secondary asteroid phases, Stage 3b: Earth's earliest hydrosphere, PM14 - Hot springs & geysers, Stage 4a: Earth's earliest continental crust, PM20 - Acidic volcanic rocks, PM25 - Evaporites (prebiotic), Stage 5: Initiation of plate tectonics, PM40 - Regional metamorphism, Stage 7: Great Oxidation Event, PM45 - Oxidized fumarolic minerals, PM46 - Near-surface hydrothermal alterations, Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere, PM50 - Coal and/or oil shale minerals, Stage 10b: Anthropogenic minerals, PM54 - Coal and other mine fire minerals

Примечания

Ludwig C F (1804) A. G. Werners Mineral - System, Erste Klasse Erdige Fossilien, VI. Kalk - Geschlecht. in Handbuch der Mineralogie nach A. G. Werner Volume 2 Siegfried Lebrecht Crusius (Leipzig) 209-212