К минералам

RRUFF #784

Actinolite

☐Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2

Элементы:CaMgFeSiOH
Valence:CaMgFe^2+SiOH

Химия

IMA chemistry:
☐Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2
Valence chemistry:
Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2

Классификация

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

Происхождение

Country:
Germany / Austria
Published:
1794
Oldest age Ma:
4000
Paragenetic modes:
Abiotic, Primary, Secondary, Stage 3a: Earth's earliest Hadean crust, PM7 - Ultramafic igneous rocks, PM8 - Mafic igneous rocks, Stage 3b: Earth's earliest hydrosphere, PM16 - Low-T aqueous alteration, Stage 4a: Earth's earliest continental crust, PM31 - Contact metamorphism, Stage 4b: Highly evolved igneous rocks, PM37 - Layered igneous formations, Stage 5: Initiation of plate tectonics, PM39 - High-P metamorphism, PM40 - Regional metamorphism

Примечания

Status notes:
Originally named actynolite: Kirwan R (1794) 16th species: actynolite. in Elements of Mineralogy, 2nd Edition, Volume 1 Elmsly (London) 167-170