К минералам

RRUFF #4939

Allanite-(La)

Элементы:CaLaAlFeSiOH
Valence:CaLaFe^2+AlSiOH

Химия

IMA chemistry:
CaLa(Al2Fe2+)[Si2O7][SiO4]O(OH)
Valence chemistry:
CaLaFe2+Al2(Si2O7)(SiO4)O(OH)

Классификация

Crystal systems:
monoclinic
Space groups:
P21, m
Structural group:
Allanite, Epidote
IMA status:
Approved

Происхождение

Country:
Italy
Published:
2003
Oldest age Ma:
2816
Paragenetic modes:
Abiotic, Primary, Stage 3a: Earth's earliest Hadean crust, PM8 - Mafic igneous rocks, Stage 4a: Earth's earliest continental crust, PM19 - Granitic intrusive rocks, Stage 4b: Highly evolved igneous rocks, PM35 - Ultra-alkali and agpaitic igneous rocks

Примечания

While the name has been used previously, it was only officially approved by IMA with this publication: Orlandi P, Pasero M (2006) Allanite-(La) from Buca della Vena mine, Apuan Alps, Italy, an epidote-group mineral. The Canadian Mineralogist 44, 63-68