Information card for entry 9001437

Structure parameters

• Mineral name: Spinel
• Formula: Al2.001 Ni1.001 O4
• Calculated formula: Al2.001 Ni1.001 O4
• Title of publication: Structural variation in nickel aluminate spinel (NiAl2O4) sample quench temperature = 900 C, initially annealed at 800 C
• Authors of publication: Roelofsen, J. N.; Peterson, R. C.; Raudsepp, M.
• Journal of publication: American Mineralogist
• Year of publication: 1992
• Journal volume: 77
• Pages of publication: 522 - 528
• a: 8.04741 Å
• b: 8.04741 Å
• c: 8.04741 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 521.157 ų
• Sample thermal history: quench temperature = 900 C; initially annealed at 800 C
• Number of distinct elements: 3
• Space group number: 227
• Hermann-Mauguin space group symbol: F d -3 m :2
• Hall space group symbol: -F 4vw 2vw 3
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No