Fe7SiO10 Smuts J, Steyn J G D, Boeyens J C A Acta Crystallographica B25 (1969) 1251-1255 The crystal structure of an iron silicate, iscorite _database_code_amcsd 0009352 21.4 3.06 5.88 90 98 90 P2_1/m atom x y z Biso Fe2+1 .0553 .75 .1416 .75 Fe2+2 .0532 .75 .6621 .73 Fe2+3 .1599 .25 .4576 1.11 Fe2+4 .4445 .75 .3553 .76 Fe2+5 .4471 .75 .8421 .89 Fe3+1 .1931 .75 .9743 1.05 Fe3+2 .3345 .25 .0378 .76 Si .3018 .75 .5251 .07 O1 .0497 .25 .4091 .64 O2 .0390 .25 .8827 .86 O3 .1469 .75 .2025 1.32 O4 .1469 .75 .6951 2.91 O5 .2342 .25 .0126 5.54 O6 .2625 .25 .5074 .06 O7 .3498 .75 .2918 2.49 O8 .3431 .75 .8088 1.82 O9 .4542 .25 .1058 1.32 O10 .4562 .25 .6002 1.78