Information card for entry 9001912

Structure parameters

• Mineral name: Cummingtonite
• Formula: Al0.008 Ca0.076 Fe3.471 Mg3.445 O24 Si8
• Calculated formula: Al0.008 Ca0.076 Fe3.471 Mg3.445 O24 Si8
• Title of publication: High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2_1/m phase transition in cummingtonite Sample: P = 1.10 GPa
• Authors of publication: Yang, H.; Hazen, R. M.; Prewitt, C. T.; Finger, L. W.; Lu, R.; Hemley, R. J.
• Journal of publication: American Mineralogist
• Year of publication: 1998
• Journal volume: 83
• Pages of publication: 288 - 299
• a: 9.4638 Å
• b: 18.1333 Å
• c: 5.3022 Å
• α: 90°
• β: 102.372°
• γ: 90°
• Cell volume: 888.779 ų
• Ambient diffracton pressure: 1100000 kPa
• Number of distinct elements: 6
• 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