К минералам

RRUFF #927

Arfvedsonite

Элементы:NaFeSiOH
Valence:NaFe^2+Fe^3+SiOH

Химия

IMA chemistry:
NaNa2(Fe2+4Fe3+)Si8O22(OH)2
Valence chemistry:
NaNa2(Fe2+4Fe3+)Si8O22(OH)2

Классификация

Crystal systems:
monoclinic
Space groups:
C2, m
Structural group:
Amphibole
IMA status:
Approved, Redefined

Происхождение

Country:
Denmark (Greenland)
Published:
1823
Oldest age Ma:
2500
Paragenetic modes:
Abiotic, Primary, Secondary, Stage 3b: Earth's earliest hydrosphere, PM17 - Marine authigenic Hadean minerals, Stage 4b: Highly evolved igneous rocks, PM35 - Ultra-alkali and agpaitic igneous rocks, PM36 - Carbonatites & kimberlites

Примечания

Brooke H J (1823) A description of the crystalline form of some new minerals. Arfwedsonite. The Annals of Philosophy 5, 381-384