AM_Hydrotalcite
Formula: (Mg.667 Al.333) O3 H14 C.167
Name: Hydrotalcite
Unit cell: 3.054 3.054 22.81 90.0 90.0 120.0 , V=184.24
Space group: R-3M (166)

Allmann R , Jepsen H P , Neues Jahrbuch fur Mineralogie, Monatshefte , 1969 (1969) p.544-551, Die struktur des hydrotalkits, Locality: Vezna, Western Moravia