Information card for entry 9017229

Structure parameters

• Mineral name: Gillespite
• Formula: Ba0.5 Cu O10 Si4 Sr0.5
• Calculated formula: Ba0.5 Cu2 O20 Si8 Sr0.5
• Title of publication: Equation of state and a high-pressure structural phase transition in the gillespite-structured phase Ba0.5Sr0.5CuSi4O10 Note: P = 4.77 GPa
• Authors of publication: Knight, K. S.; Marshall, W. G.; Henderson, C. M. B.; Chamberlain, A. A.
• Journal of publication: European Journal of Mineralogy
• Year of publication: 2013
• Journal volume: 25
• Pages of publication: 909 - 917
• a: 7.2623 Å
• b: 7.2623 Å
• c: 15.252 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 804.406 ų
• Ambient diffracton pressure: 4770000 kPa
• Number of distinct elements: 5
• Space group number: 90
• Hermann-Mauguin space group symbol: P 4 21 2 (a-1/4,b+1/4,c)
• Hall space group symbol: P 4ab 2ab (x+1/4,y-1/4,z)
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No