Zaccagnaite Lozano R P, Rossi C, La Iglesia A, Matesanz E American Mineralogist 97 (2012) 513-523 Zaccagnaite-3R, a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain) Note: polytype zaccagnaite-3R Locality: El Soplao cave, Cantabria, Spain _database_code_amcsd 0018810 3.06616 3.06616 22.6164 90 90 120 R-3m atom x y z occ Biso Zn 0 0 0 .6 1.42 Al 0 0 0 .4 1.42 O1 0 0 .3772 1.68 H 0 0 .427 1.68 C 1/3 2/3 .502 .1 2.5 O2 .114 -.114 .499 .1 2.5 Wat .114 -.114 .499 .076 2.5