Information card for entry 9009329

Structure parameters

• Mineral name: Franciscanite
• Formula: H3 Mn3 O7 Si V0.5
• Calculated formula: H3 Mn3 O7 Si V0.5
• Title of publication: The crystal structure of franciscanite, Mn3(Vx_1-x)(SiO4)(O,OH)3,(x ~ 0.5) California, USA
• Authors of publication: Pertlik, F.
• Journal of publication: Neues Jahrbuch fur Mineralogie, Monatshefte
• Year of publication: 1986
• Journal volume: 1986
• Pages of publication: 493 - 499
• a: 8.1518 Å
• b: 8.1518 Å
• c: 4.8091 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 276.759 ų
• Number of distinct elements: 5
• Space group number: 143
• Hermann-Mauguin space group symbol: P 3
• Hall space group symbol: P 3
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No