Information card for entry 9000811

Structure parameters

• Mineral name: Picropharmacolite
• Formula: As4 Ca4 H24 Mg O27
• Calculated formula: As4 Ca4 H24 Mg O27
• Title of publication: The crystal structure of picropharmacolite, Ca4Mg(HAsO4)2(AsO4)2*11H2O
• Authors of publication: Catti, M.; Ferraris, G.; Ivaldi, G.
• Journal of publication: American Mineralogist
• Year of publication: 1981
• Journal volume: 66
• Pages of publication: 385 - 391
• a: 13.547 Å
• b: 13.5 Å
• c: 6.71 Å
• α: 99.85°
• β: 96.41°
• γ: 91.6°
• Cell volume: 1200.12 ų
• Number of distinct elements: 5
• Space group number: 2
• Hermann-Mauguin space group symbol: P -1
• Hall space group symbol: -P 1
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No