Spinel Lenaz D, Youbi N, Min A D, Boumehdi M A, Abbou M B American Mineralogist 99 (2014) 267-275 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-TF8 Locality:Middle Atlas Neogene-Quaternary Volcanic Field of Morocco _database_code_amcsd 0020067 CELL PARAMETERS: 8.1704 8.1704 8.1704 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 545.419 Density (g/cm3): 4.048 MAX. ABS. INTENSITY / VOLUME**2: 32.94545539 RIR: 2.650 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.81 20.95 4.7172 1 1 1 8 30.96 33.96 2.8887 2 2 0 12 36.47 100.00 2.4635 3 1 1 24 44.35 36.04 2.0426 4 0 0 6 55.06 9.65 1.6678 4 2 2 24 58.72 37.41 1.5724 5 1 1 24 58.72 3.72 1.5724 3 3 3 8 64.52 56.15 1.4443 4 4 0 12 67.86 2.08 1.3810 5 3 1 48 73.28 3.04 1.2919 6 2 0 24 76.45 9.47 1.2460 5 3 3 24 77.49 2.11 1.2317 6 2 2 24 81.64 4.35 1.1793 4 4 4 8 84.73 1.78 1.1441 5 5 1 24 89.84 4.87 1.0918 6 4 2 48 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.