Information card for entry 9000152

Structure parameters

• Mineral name: Johannsenite
• Formula: Ca Mn O6 Si2
• Calculated formula: Ca Mn O6 Si2
• Title of publication: Refinement of the crystal structure of johannsenite
• Authors of publication: Freed, R. L.; Peacor, D. R.
• Journal of publication: American Mineralogist
• Year of publication: 1967
• Journal volume: 52
• Pages of publication: 709 - 720
• a: 9.978 Å
• b: 9.156 Å
• c: 5.293 Å
• α: 90°
• β: 105.48°
• γ: 90°
• Cell volume: 466.019 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