Information card for entry 9017694

Structure parameters

• Mineral name: Braccoite
• Formula: Al0.02 As0.96 Ca0.02 F0.04 H3.96 Mg0.38 Mn9.56 Na2.12 O38 Si10.74 V0.32
• Calculated formula: Al0.02 As0.96 Ca0.02 F0.04 H3.96 Mg0.38 Mn9.56 Na2.12 O38 Si10.74 V0.32
• Title of publication: As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: II. braccoite, NaMn5[Si5AsO17(OH)](OH), description and crystal structure
• Authors of publication: Camara, F.; Bittarello, E.; Ciriotti, M. E.; Nestola, F.; Radica, F.; Marchesini, M.
• Journal of publication: Mineralogical Magazine
• Year of publication: 2015
• Journal volume: 79
• Pages of publication: 171 - 189
• a: 9.7354 Å
• b: 9.9572 Å
• c: 9.0657 Å
• α: 92.691°
• β: 117.057°
• γ: 105.323°
• Cell volume: 740.37 ų
• Number of distinct elements: 11
• 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