Rancieite Ertl A, Pertlik F, Prem M, Post J E, Kim S J, Brandstatter F, Schuster R European Journal of Mineralogy 17 (2005) 163-172 Rancieite crystals from Friesach, Carinthia, Austria Note: Birnessite group Locality: Friesach, Carinthia, Austria _database_code_amcsd 0007090 2.845 2.845 7.485 90 90 120 P-3 atom x y z occ Biso Ca .5 0 .5 .53 1.40 Mn4+ 0 0 0 1/6 1.40 O1 1/3 2/3 .140 1/3 1.40 O2 0 0 .5 .32 1.40 O3 2/3 1/3 .380 .60 1.40