Arapovite

Химия

IMA chemistry:: (K1-x☐x)(Ca,Na)2U4+Si8O20 [x ≈ 0.5]
Valence chemistry:: (K1-x☐x)(Ca,Na)2U4+Si8O20 (x~0.5)

Классификация

Crystal systems:: tetragonal
Space groups:: P4, mcc
Structural group:: Steacyite
IMA status:: Approved

Происхождение

Country:: Tajikistan
Published:: 2003
Oldest age Ma:: 359
Paragenetic modes:: Abiotic, Primary, Stage 4b: Highly evolved igneous rocks, PM35 - Ultra-alkali and agpaitic igneous rocks

Примечания

Agakhanov A A, Pautov L A, Uvarova Y A, Sokolova E V, Hawthorne F C, Karpenko V Y, Dusmatov V D, Semenov E I (2004) Arapovite, (U,Th)(Ca,Na)2(K1-x☐x)Si8O20·H2O – new mineral. New Data on Minerals. Moscow 39, 14-19 Chemical formula revised: Uvarova Y A, Sokolova E, Hawthorne F C, Agakhanov A A, Pautov L A (2004) The crystal structure of arapovite, U4+(Ca,Na)2(K1-x☐x)[Si8O20], x~0.5, a new mineral species of the steacyite group from the Dara-I-Pioz Moraine, Tien-Shan Mountains, Tajikistan. The Canadian Mineralogist 42, 1005-1011