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-BI24
Locality:Middle Atlas Neogene-Quaternary Volcanic Field of Morocco
_database_code_amcsd 0020064
8.1727 8.1727 8.1727 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 .694 .0079  .0079  .0079  .0079       0       0       0
FeT    .125   .125   .125 .306 .0079  .0079  .0079  .0079       0       0       0
AlM      .5     .5     .5  .69 .0054  .0054  .0054  .0054 -.00042 -.00042 -.00042
CrM      .5     .5     .5  .31 .0054  .0054  .0054  .0054 -.00042 -.00042 -.00042
O    .26274 .26274 .26274      .0078  .0078  .0078  .0078  -.0006  -.0006  -.0006