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-TF21 Locality:Middle Atlas Neogene-Quaternary Volcanic Field of Morocco _database_code_amcsd 0020068 CELL PARAMETERS: 8.1391 8.1391 8.1391 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 539.174 Density (g/cm3): 3.959 MAX. ABS. INTENSITY / VOLUME**2: 29.69605948 RIR: 2.442 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.88 19.53 4.6991 1 1 1 8 31.08 35.96 2.8776 2 2 0 12 36.62 100.00 2.4540 3 1 1 24 44.53 37.04 2.0348 4 0 0 6 55.29 10.17 1.6614 4 2 2 24 58.97 3.59 1.5664 3 3 3 8 58.97 38.39 1.5664 5 1 1 24 64.80 58.14 1.4388 4 4 0 12 68.16 1.88 1.3758 5 3 1 48 73.60 3.19 1.2869 6 2 0 24 76.79 9.54 1.2412 5 3 3 24 77.85 1.69 1.2270 6 2 2 24 82.03 4.41 1.1748 4 4 4 8 85.13 1.77 1.1397 5 5 1 24 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.