К минералам

RRUFF #791

Aenigmatite

Элементы:NaFeTiOSi
Valence:NaFe^2+Ti^4+OSi

Химия

IMA chemistry:
Na4[Fe2+10Ti2]O4[Si12O36]
Valence chemistry:
Na4(Fe2+10Ti4+2)O4[Si12O36]

Классификация

Crystal systems:
triclinic
Space groups:
P1
Structural group:
Sapphirine
IMA status:
Approved

Происхождение

Country:
Denmark (Greenland)
Published:
1865
Oldest age Ma:
4567.61
Paragenetic modes:
Abiotic, Primary, Secondary, Stage 2: Planetesimal differentiation & alteration, PM6 - Secondary asteroid phases, Stage 3a: Earth's earliest Hadean crust, PM9 - Lava/xenolith minerals, Stage 4a: Earth's earliest continental crust, PM19 - Granitic intrusive rocks, PM20 - Acidic volcanic rocks, Stage 4b: Highly evolved igneous rocks, PM35 - Ultra-alkali and agpaitic igneous rocks, PM36 - Carbonatites & kimberlites

Примечания

Breithaupt A (1865) Mineralogische Studien. 29. Kölbingit. Ainigmatit, Berg- und Huttenmannische Zeitung 24, 397-398