Information card for entry 9011829

Structure parameters

• Mineral name: Perhamite
• Formula: Al7.7 Ca2.7 H12.68 O45.862 P4 Si3 Sr0.3
• Calculated formula: Al7.7 Ca2.7 H10 O39.862 P4 Si3 Sr0.3
• Title of publication: The crystal structure of perhamite Note: H positions unknown
• Authors of publication: Mills, S.; Mumme, G.; Grey, I.; Bordet, P.
• Journal of publication: Mineralogical Magazine
• Year of publication: 2006
• Journal volume: 70
• Pages of publication: 201 - 209
• a: 7.021 Å
• b: 7.021 Å
• c: 20.218 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 863.111 ų
• Number of distinct elements: 7
• Space group number: 164
• Hermann-Mauguin space group symbol: P -3 m 1
• Hall space group symbol: -P 3 2"
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No