К минералам

RRUFF #885

Andradite

Элементы:CaFeSiO
Valence:CaFe^3+SiO

Химия

IMA chemistry:
Ca3Fe3+2(SiO4)3
Valence chemistry:
Ca3Fe3+2(SiO4)3

Классификация

Crystal systems:
triclinic, cubic
Space groups:
Ia3d, I1
Structural group:
Garnet
IMA status:
Approved, Grandfathered

Происхождение

Country:
Norway
Published:
1868
Oldest age Ma:
4568.5
Paragenetic modes:
Abiotic, Biotic, Primary, Secondary, Stage 2: Planetesimal differentiation & alteration, PM6 - Secondary asteroid phases, Stage 4a: Earth's earliest continental crust, PM26 - Hadean detrital minerals, PM31 - Contact metamorphism, Stage 4b: Highly evolved igneous rocks, PM35 - Ultra-alkali and agpaitic igneous rocks, PM36 - Carbonatites & kimberlites, Stage 5: Initiation of plate tectonics, PM40 - Regional metamorphism, Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere, PM51 - Pyrometamorphic minerals

Примечания

Dana J D, Brush G J (1868) E. Lime-Irongarnet; Andradite, in A System of Mineralogy, Fifth Edition, John Wiley and Sons (New York) 268-270