Jadeite Cameron M, Sueno S, Prewitt C T, Papike J J American Mineralogist 58 (1973) 594-618 High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite T = 800 C pyroxene _database_code_amcsd 0000354 9.483 8.63 5.249 90 107.59 90 C2/c atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Si .2902 .0926 .2258 .00321 .00349 .00690 -.00033 .00110 -.00039 Al1 0 .9039 1/4 .00396 .00382 .00798 0 .00083 0 Na2 0 .3008 1/4 .01298 .00722 .01970 0 -.00158 0 O1 .1098 .0751 .1274 .00341 .00506 .00977 -.00016 .00088 .00060 O2 .3614 .2611 .2894 .00642 .00402 .01668 -.00153 .00215 -.00049 O3 .3520 .0062 .0048 .00490 .00661 .00994 .00035 .00228 -.00250