Information card for entry 9001132

Structure parameters

• Mineral name: Osumilite
• Formula: Al4.5 Fe K0.75 Mg1.18 O30 Si10.32
• Calculated formula: Al4.5 Fe K0.75 Mg1.18 O30 Si10.32
• Title of publication: Crystal chemistry of double-ring silicates: Structural, chemical, and optical variation in osumilites Sample: Sardinia
• Authors of publication: Armbruster, T.; Oberhansli, R.
• Journal of publication: American Mineralogist
• Year of publication: 1988
• Journal volume: 73
• Pages of publication: 585 - 594
• a: 10.127 Å
• b: 10.127 Å
• c: 14.288 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1269.01 ų
• Number of distinct elements: 6
• Space group number: 192
• Hermann-Mauguin space group symbol: P 6/m c c
• Hall space group symbol: -P 6 2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No