Information card for entry 9014840

Structure parameters

• Mineral name: Cuspidine
• Formula: Ca4 F2 O7 Si2
• Calculated formula: Ca4 F2 O7 Si2
• Title of publication: Crystal structure of cuspidine
• Authors of publication: Smirnova, R. F.; Rumanova, I. M.; Belov, N. V.
• Journal of publication: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva
• Year of publication: 1955
• Journal volume: 84
• Pages of publication: 159 - 169
• a: 7.55 Å
• b: 10.43 Å
• c: 10.85 Å
• α: 90°
• β: 69.93°
• γ: 90°
• Cell volume: 802.515 ų
• Number of distinct elements: 4
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/c 1
• Hall space group symbol: -P 2ybc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No