Penroseite Furuseth S, Kjekshus A, Andresen A F Acta Chemica Scandinavica 23 (1969) 2325-2334 On the magnetic properties of CoSe2, NiS2, and NiSe2 Locality: synthetic _database_code_amcsd 0011916 5.9629 5.9629 5.9629 90 90 90 Pa3 atom x y z Ni 0 0 0 Se .3830 .3830 .3830