К минералам

RRUFF #833

Allanite-(Y)

Элементы:CaYAlFeSiOH
Valence:CaYAlFe^2+SiOH

Химия

IMA chemistry:
CaY(Al2Fe2+)(Si2O7)(SiO4)O(OH)
Valence chemistry:
CaYAl2Fe2+(Si2O7)(SiO4)O(OH)

Классификация

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

Происхождение

Country:
South Africa
Published:
1949
Oldest age Ma:
2698
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, PM34 - Complex granite pegmatites, PM35 - Ultra-alkali and agpaitic igneous rocks

Примечания

Nel H J, Strauss C A, Wickman F E (1949) Lombaardite, a new mineral from the Zaaiplaats tin mine, Central Transvaal. Union of South Africa Department of Mines, Geological Survey Memoir 43, 45-57 Name changed from lombaardite to allanite-(Y): Levinson A A (1966) A system of nomenclature for rare-earth minerals. American Mineralogist 51, 152-158