Alumohydrocalcite (IMA symbol: Ahcal) is a calcium aluminium carbonate mineral with the chemical formula CaAl(CO)(OH)·4HO. Its type locality is Khakassia, Russia.Alumohydrocalcite on mindat.org
References
External links
Alumohydrocalcite data sheet Alumohydrocalcite on the Handbook of Minerals