Information card for entry 9017305

Structure parameters

• Mineral name: Orthoclase
• Formula: Al1.01 K0.94 Na0.06 O8 Si2.99
• Calculated formula: Al4.04 K3.76 Na0.24 O32 Si11.96
• Title of publication: The crystal structures of nine K feldspars from the Adamello Massif (Northern Italy) Note: Sample P2B
• Authors of publication: Dal Negro, A.; De Pieri, R.; Quareni, S.
• Journal of publication: Acta Crystallographica, Section B
• Year of publication: 1978
• Journal volume: 34
• Pages of publication: 2699 - 2707
• a: 8.589 Å
• b: 13.013 Å
• c: 7.197 Å
• α: 90°
• β: 116.02°
• γ: 90°
• Cell volume: 722.866 ų
• Number of distinct elements: 5
• Space group number: 2
• Hermann-Mauguin space group symbol: C -1
• Hall space group symbol: -C 1
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No