Information card for entry 1011205

Structure parameters

• Chemical name: Potassium tecto-alumotrisilicate
• Mineral name: Orthoclase
• Formula: Al K O8 Si3
• Calculated formula: Al K O8 Si3
• Title of publication: The structure of orthoclase.
• Authors of publication: Chao, S H; Hargreaves, A; Taylor, W H
• Journal of publication: Mineralogical Magazine and Journal of the Mineralogical Society (1876- 1968)
• Year of publication: 1940
• Journal volume: 25
• Pages of publication: 498 - 512
• a: 8.6 Å
• b: 13.02 Å
• c: 7.22 Å
• α: 90°
• β: 116.05°
• γ: 90°
• Cell volume: 726.3 ų
• Number of distinct elements: 4
• Space group number: 12
• Hermann-Mauguin space group symbol: C 1 2/m 1
• Hall space group symbol: -C 2y
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No