К минералам

RRUFF #897

Annite

Элементы:KFeAlSiOH
Valence:KFe^2+AlSiOH

Химия

IMA chemistry:
KFe2+3(AlSi3O10)(OH)2
Valence chemistry:
KFe2+3AlSi3O10(OH)2

Классификация

Crystal systems:
monoclinic
Space groups:
C2, m, c
Structural group:
Mica, Clay
IMA status:
Approved

Происхождение

Country:
USA
Published:
1868
Oldest age Ma:
2906
Paragenetic modes:
Abiotic, Primary, Secondary, Stage 3a: Earth's earliest Hadean crust, PM8 - Mafic igneous rocks, PM9 - Lava/xenolith minerals, Stage 4a: Earth's earliest continental crust, PM19 - Granitic intrusive rocks, PM20 - Acidic volcanic rocks, PM31 - Contact metamorphism, Stage 4b: Highly evolved igneous rocks, PM34 - Complex granite pegmatites, PM35 - Ultra-alkali and agpaitic igneous rocks, Stage 5: Initiation of plate tectonics, PM40 - Regional metamorphism

Примечания

Dana J D, Brush G J (1868) 291. Annite. in A System of Mineralogy, Fifth Edition John Wiley and Sons (New York) 308-308