Knorringite Juhin A, Morin G, Elkaim E, Frost D J, Fialin M, Juillot F, Calas G American Mineralogist 95 (2010) 59-63 Structure refinement of a synthetic knorringite, Mg3(Cr0.8Mg0.1Si0.1)2(SiO4)3 Locality: synthetic _database_code_amcsd 0004999 11.5935 11.5935 11.5935 90 90 90 Ia-3d atom x y z occ Biso CrY 0 0 0 .84 .34 MgY 0 0 0 .08 .34 SiY 0 0 0 .08 .34 MgX .125 0 .25 1.12 SiZ .375 0 .25 .46 O .0348 .0516 .6571 1.08