Information card for entry 9004517

Structure parameters

• Mineral name: Esperanzaite
• Formula: Al2 As2 Ca2 F4 H5 Na0.68 O11
• Calculated formula: Al2 As2 Ca2 F4 H5 Na0.68 O11
• Title of publication: Esperanzaite, NaCa2Al2(AsO4)2F4(OH).2H2O, a new mineral species from the La Esperanza mine, Mexico: Descriptive mineralogy and atomic arrangement
• Authors of publication: Foord, E. E.; Hughes, J. M.; Cureton, F. E.; Maxwell, C. H.; Falster, A. U.; Sommer, A. J.; Hlava, P. F.
• Journal of publication: The Canadian Mineralogist
• Year of publication: 1999
• Journal volume: 37
• Pages of publication: 67 - 72
• a: 9.687 Å
• b: 10.7379 Å
• c: 5.5523 Å
• α: 90°
• β: 105.32°
• γ: 90°
• Cell volume: 557.017 ų
• Number of distinct elements: 7
• Space group number: 11
• Hermann-Mauguin space group symbol: P 1 21/m 1
• Hall space group symbol: -P 2yb
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No