К минералам

RRUFF #840

Almandine

Элементы:FeAlSiO
Valence:Fe^2+AlSiO

Химия

IMA chemistry:
Fe2+3Al2(SiO4)3
Valence chemistry:
Fe2+3Al2(SiO4)3

Классификация

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

Происхождение

Country:
Turkey
Published:
0
Oldest age Ma:
2925
Paragenetic modes:
Abiotic, Primary, Secondary, Stage 3a: Earth's earliest Hadean crust, PM8 - Mafic igneous rocks, Stage 4a: Earth's earliest continental crust, PM19 - Granitic intrusive rocks, PM26 - Hadean detrital minerals, Stage 4b: Highly evolved igneous rocks, PM36 - Carbonatites & kimberlites, Stage 5: Initiation of plate tectonics, PM38 - Ophiolites, PM40 - Regional metamorphism

Примечания

Mineral name, or its predecessor alabandina, has been known since antiquity and predates any formal descriptive publication.