Information card for entry 9014130

Structure parameters

• Mineral name: Arapovite
• Formula: Ba0.02 Ca1.34 Ce0.02 Dy0.02 K0.52 Na0.68 Nd0.04 O20 Pr0.01 Si8 Sm0.01 Th0.26 U0.59
• Calculated formula: Ba0.02 Ca1.34 Ce0.02 Dy0.02 K0.52 Na0.68 Nd0.04 O20 Pr0.01 Si8 Sm0.01 Th0.26 U0.59
• Title of publication: 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
• Authors of publication: Uvarova, Y. A.; Sokolova, E. V.; Hawthorne, F. C.; Agakhanov, A. A.; Pautov, L. A.
• Journal of publication: The Canadian Mineralogist
• Year of publication: 2004
• Journal volume: 42
• Pages of publication: 1005 - 1011
• a: 7.5505 Å
• b: 7.5505 Å
• c: 14.7104 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 838.641 ų
• Number of distinct elements: 13
• Space group number: 124
• Hermann-Mauguin space group symbol: P 4/m c c
• Hall space group symbol: -P 4 2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No