Information card for entry 9001915

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 = 5.09 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: 9.2993 Å
• b: 17.89 Å
• c: 5.2321 Å
• α: 90°
• β: 102.979°
• γ: 90°
• Cell volume: 848.198 ų
• Ambient diffracton pressure: 5090000 kPa
• Number of distinct elements: 6
• Space group number: 11
• Hermann-Mauguin space group symbol: P 1 21/m 1
• Hall space group symbol: -P 2yb
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No