Astrophyllite

Химия

IMA chemistry:: K2NaFe2+7Ti2(Si4O12)2O2(OH)4F
Valence chemistry:: K2NaFe2+7Ti4+2(Si4O12)2O2(OH)4F

Классификация

Crystal systems:: triclinic
Space groups:: P1, A1
Structural group:: Astrophyllite-Astrophyllite
IMA status:: Approved, Grandfathered

Происхождение

Country:: Norway
Published:: 1848
Oldest age Ma:: 2500
Paragenetic modes:: Abiotic, Primary, Stage 4b: Highly evolved igneous rocks, PM35 - Ultra-alkali and agpaitic igneous rocks

Примечания

Weibye P C (1848) Beiträge zur topographischen Mineralogie Norwegens. Archiv für Mineralogie, Geognosie, Bergbau und Hüttenkunde. 22, 465-544 Chemical composition determined: Brøgger W C (1890) Die Mineralien der Syenitpegmatitgänge der sünorwegischen Augit- und Nephelinsyenite, 35. Astrophyllit. Zeitschrift für Kristallographie 16, 200-216 Chemical composition revised according to: Cámara F, Sokolova E, Abdu Y, Hawthorne F C (2010) The crystal structures of niobophyllite, kupletskite-(Cs) and Sn-rich astrophyllite: Revisions to the crystal chemistry of the astrophyllite-group minerals. The Canadian Mineralogist 48, 1-16