Information card for entry 9001089

Structure parameters

• Mineral name: Tiptopite
• Formula: Be3 Ca0.36 H7.26 K Li1.44 Na0.84 O15.01 P3
• Calculated formula: Be3 Ca0.36 H3.01 K Li1.44 Na0.84 O15.01 P3
• Title of publication: Crystal structure of tiptopite, a framework beryllophosphate isotypic with basic cancrinite Note: U(1,2) for OH5 has been altered to match symmetry constraints.
• Authors of publication: Peacor D R; Rouse R C; Ahn J-H
• Journal of publication: American Mineralogist
• Year of publication: 1987
• Journal volume: 72
• Pages of publication: 816 - 820
• a: 11.655 Å
• b: 11.655 Å
• c: 4.692 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 551.967 ų
• Number of distinct elements: 8
• Space group number: 173
• Hermann-Mauguin space group symbol: P 63
• Hall space group symbol: P 6c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No