Natalyite Secco L, Martignago F, Dal Negro A, Reznitskii L Z, Sklyarov E V American Mineralogist 87 (2002) 709-714 Crystal chemistry of Cr-V-rich clinopyroxenes Sample 4 _database_code_amcsd 0002809 9.6582 8.8273 5.2665 90 106.577 90 C2/c atom x y z occ Uiso SiT .28912 .09199 .23179 .999 .00432 AlT .28912 .09199 .23179 .001 .00432 CrM1 0 .90568 .25 .238 .00498 VM1 0 .90568 .25 .257 .00498 MgM1 0 .90568 .25 .461 .00498 AlM1 0 .90568 .25 .044 .00498 CaM2 0 .30179 .25 .463 .00941 NaM2 0 .30179 .25 .537 .00941 O1 .11457 .08184 .13966 .00703 O2 .36041 .25417 .31028 .00837 O3 .35165 .01373 .00211 .00723