Information card for entry 9017029

Structure parameters

• Mineral name: Spinel
• Formula: Al1.758 Cr0.242 Fe0.242 Mg0.758 O4
• Calculated formula: Al14.064 Cr1.936 Fe1.936 Mg6.064 O32
• Title of publication: Low intra-crystalline closure temperatures of Cr-bearing spinels from the mantle xenoliths of the Middle AtlasNeogene-Quaternary Volcanic Field (Morocco):Mineralogical evidence of a cooler mantle beneath the West African Craton. Note:Sample MAR-BI2
• Authors of publication: Lenaz, D.; Youbi, N.; Min, A. D.; Boumehdi, M. A.; Abbou, M. B.
• Journal of publication: American Mineralogist
• Year of publication: 2014
• Journal volume: 99
• Pages of publication: 267 - 275
• a: 8.1334 Å
• b: 8.1334 Å
• c: 8.1334 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 538.042 ų
• Number of distinct elements: 5
• 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