Effenbergerite Lin H C, Liao F L, Wang S L Acta Crystallographica C48 (1992) 1297-1299 Structure of BaCuSi4O10 Locality: synthetic _database_code_amcsd 0018737 7.440 7.440 16.097 90 90 90 *P4/ncc .25 -.25 0 atom x y z Uiso Cu .75 .75 -.0944 .009 Ba .75 .25 0 .012 Si .9822 -.0618 .1543 .009 O1 .7763 -.0007 .1365 .016 O2 .0247 -.0247 .25 .031 O3 .4688 .1130 .0909 .017