Hornesite Rojo J M, Mesa J L, Pizarro J L, Lezama L, Arriortua M I, Rojo T Materials Research Bulletin 31 (1996) 925-934 Spectroscopic and magnetic study of the (Mg,M)3(AsO4)2*8H2O (M = Ni2+, Co2+) arsenates Locality: synthetic Note: z(Wat2) corrected _database_code_amcsd 0014376 10.2573 13.4211 4.7526 90 105.076 90 C2/m atom x y z occ Biso MgM1 0 0 0 .648 .44 NiM1 0 0 0 .352 .44 MgM2 0 .3839 0 .918 .44 NiM2 0 .3839 0 .082 .44 As .3154 0 .3785 .44 O1 .1498 0 .384 .44 O2 .4065 0 .737 .44 O3 .3370 .1108 .2168 .44 Wat1 .0990 .1127 -.1885 .44 Wat2 .4014 .2253 .7075 .44