Palmierite Tissot R G, Rodriguez M A, Sipola D L, Voigt J A Powder Diffraction 16 (2001) 92-97 X-ray powder diffraction study of synthetic palmierite, K2Pb(SO4)2 Locality: synthetic _database_code_amcsd 0015320 5.497 5.497 20.864 90 90 120 R-3m atom x y z Biso K 1/3 2/3 .4650 1.99 Pb 0 0 0 1.99 S 0 0 .4033 1.99 O1 0 0 .333 1.99 O2 .296 .148 .427 1.99