AM_Zincowoodwardite-3R Formula: (Zn.625 Al.375) S.188 O2.692 H2.24 Name: Zincowoodwardite-3R Unit cell: 3.065 3.065 25.42 90.0 90.0 120.0 , V=206.81 Space group: R-3M (166)

Witzke T , Raade G , Neues Jahrbuch fur Mineralogie, Monatshefte , 2000 (2000) p.455-465, Zincowoodwardite, [Zn1-x Alx(OH)2][(SO4)x/2(H2O)n], a new mineral of the hydrotalcite group, Locality: Hilarion mine, Kamariza, near Laurion, Greece