К минералам

RRUFF #1004

Bafertisite

Элементы:BaFeTiSiOHF
Valence:BaFe^2+Ti^4+SiOHF

Химия

IMA chemistry:
Ba2Fe2+4Ti2(Si2O7)2O2(OH)2F2
Valence chemistry:
Ba2Fe2+4Ti4+2(Si2O7)2O2(OH)2F2

Классификация

Crystal systems:
monoclinic, orthorhombic
Space groups:
Cm
Structural group:
Seidozerite-Bafertisite
IMA status:
Approved, Redefined

Происхождение

Country:
China
Published:
1959
Oldest age Ma:
2500
Paragenetic modes:
Abiotic, Primary, Secondary, Stage 4a: Earth's earliest continental crust, PM23 - Subaerial alteration, Stage 4b: Highly evolved igneous rocks, PM35 - Ultra-alkali and agpaitic igneous rocks

Примечания

Semenov E I, Pei-shan Z (1959) New mineral - bafertisite. Science Record (Beijing) 3, 652-655 Chemical formula revised from BaFe2TiSi2O9 to BaFe2+2Ti(Si2O7)O(OH,F)2: Sokolova E (2006) From structure topology to chemical composition. I. Structural hierarchy and stereochemistry in titanium disilicate minerals. The Canadian Mineralogist 44, 1273-1330 Chemical formula revised from BaFe2+2Ti(Si2O7)O(OH,F)2: Cámara F, Sokolova E, Abdu Y A, Pautov L A (2016) From structure topology to chemical composition. XIX. Titanium silicates: Revision of the crystal structure and chemical formula of bafertisite Ba2Fe2+4Ti2(Si2O7)2O2(OH)2F2, A Group-II TS-block mineral. The Canadian Mineralogist 54, 49-63