Kosmochlor Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E American Mineralogist 88 (2003) 1025-1032 High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of anisotropic compression in pyroxenes Sample: P = 7.08 GPa _database_code_amcsd 0003140 9.4110 8.5517 5.1729 90 106.910 90 C2/c atom x y z Biso Na2 0 .3058 .25 1.3 Cr1 0 .9088 .25 .84 Si .2927 .0936 .2355 .95 O1 .116 .0813 .140 0.8 O2 .362 .2627 .313 1.2 O3 .358 .0172 .002 1.07