Information card for entry 9001224

Structure parameters

• Mineral name: Geigerite
• Formula: As4 H22 Mn5 O26
• Calculated formula: As4 H22 Mn5 O26
• Title of publication: Geigerite, the Mn analogue of chudobaite: Its description and crystal structure
• Authors of publication: Graeser, S.; Schwander, H.; Bianchi, R.; Pilati, T.; Gramaccioli, C. M.
• Journal of publication: American Mineralogist
• Year of publication: 1989
• Journal volume: 74
• Pages of publication: 676 - 684
• a: 7.944 Å
• b: 10.691 Å
• c: 6.77 Å
• α: 80.97°
• β: 84.2°
• γ: 81.85°
• Cell volume: 560.281 ų
• Number of distinct elements: 4
• 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