Kottenheimite Chukanov N V, Britvin S N, Van K V, Mockel S, Zadov A E The Canadian Mineralogist 50 (2012) 55-63 Kottenheimite, Ca3Si(OH)6(SO4)2*12H2O, a new member of the ettringite group from the Eifel area, Germany Locality: Bellerberg, near Kottenheim, Eastern Eifel area, Rhineland-Palatinate, Germany _database_code_amcsd 0019043 11.1548 11.1548 10.5702 90 90 120 P6_3/m atom x y z occ Biso Ca .193 -.0124 .25 .14 Si 0 0 0 1.1 S 1/3 2/3 0 .91 .8 Wat1 .390 .2325 .25 1.1 Wat2 .137 -.254 .25 1.5 Wat3 .3333 -.0155 .4257 .6 OH4 .1353 .1278 .1030 1.00 O5 1/3 2/3 -.137 .86 7.9 O6 .1912 .6133 .0334 .99 5.3