Information card for entry 9003394

Structure parameters

• Mineral name: Pyroxene-ideal
• Formula: Cr Na O6 Si2
• Calculated formula: Cr Na O6 Si2
• Title of publication: Model pyroxenes II: Structural variation as a function of tetrahedral rotation model kosmochlor after Cameron et al. (1973) with O3-O3-O3 angle = 172.0 and model oxygen radius = 1.294
• Authors of publication: Thompson, R. M.; Downs, R. T.
• Journal of publication: American Mineralogist
• Year of publication: 2004
• Journal volume: 89
• Pages of publication: 614 - 628
• a: 9.653 Å
• b: 8.944 Å
• c: 5.164 Å
• α: 90°
• β: 109.6°
• γ: 90°
• Cell volume: 420.008 ų
• Number of distinct elements: 4
• Space group number: 15
• Hermann-Mauguin space group symbol: C 1 2/c 1
• Hall space group symbol: -C 2yc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No