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-BI2
Locality:Middle Atlas Neogene-Quaternary Volcanic Field of Morocco
_database_code_amcsd 0020061
8.1334 8.1334 8.1334 90 90 90  *Fd3m
.125 .125 .125
atom      x      y      z  occ  Uiso U(1,1) U(2,2) U(3,3)  U(1,2)  U(1,3)  U(2,3)
MgT    .125   .125   .125 .758 .0063  .0063  .0063  .0063       0       0       0
FeT    .125   .125   .125 .242 .0063  .0063  .0063  .0063       0       0       0
AlM      .5     .5     .5 .879 .0043  .0043  .0043  .0043 -.00026 -.00026 -.00026
CrM      .5     .5     .5 .121 .0043  .0043  .0043  .0043 -.00026 -.00026 -.00026
O    .26283 .26283 .26283      .0083  .0083  .0083  .0083  -.0002  -.0002  -.0002