Browsing by Author "Uvarova Y.A."

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A NOVEL [SI18O45]18- SHEET IN THE CRYSTAL STRUCTURE OF ZERAVSHANITE, CS4 NA2 ZR3 [SI18O45] (H2O )2

Uvarova Y.A.; Sokolova E.; Hawthorne F.C.; Pautov L.A.; Agakhanov A.A. (2004)

The crystal structure of zeravshanite, ideally Cs4 Na2Zr3 (Si18O45 (H2O)2, monoclinic, a 26.3511(8), b 7.5464(3), c 22.9769(8) Å, β 107.237(1)°, V 4363.9(4) Å3, space group C2/c, Z=4, D(calc.) = 3.170 g.cm-3, was solved ...
THE CRYSTAL CHEMISTRY OF SCHERBAKOVITE FROM THE KHIBINA MASSIF, KOLA PENINSULA, RUSSIA

Uvarova Y.A.; Sokolova E.; Hawthorne F.C.; Liferovich R.P.; Mitchell R.H. (2003)

The crystal structure of shcherbakovite from Mount Rasvumchorr, Khibina massif, Kola Peninsula, Russia, ideally K2 Na Ti 4+ 2 O (OH) (Si4O12), a 8.1538(4), b 10.5569(5), c 13.9882(6) A, V 1204.1(2) A 3 , space group Imma, ...
THE CRYSTAL STRUCTURE OF ARAPOVITE, U4+ (CA, NA)2 (K1-X↔X) [SI8 O20], X ≈ 0.5, A NEW MINERAL SPECIES OF THE STEACYITE GROUP FROM THE DARA-I-PIOZ MORAINE, TIEN-SHAN MOUNTAINS, TAJIKISTAN

Uvarova Y.A.; Sokolova E.; Hawthorne F.C.; Agakhanov A.A.; Pautov L.A. (2004)

The crystal structure of arapovite, ideally U4+ (Ca,Na)2 (K1– x □ x ) [Si8 O20], x ≈ 0.5, tetragonal, a 7.5505(4), c 14.7104(9) A, V 838.6(1) A3, space group P 4 /mcc , Z = 2, D calc. 3.365 g/cm3, was refined to an R 1 ...

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