Afghanite, (Na,K)22Ca10[Si24Al24O96](SO4)6Cl6,[2] is a hydrous sodium, calcium, potassium, sulfate, chloride, carbonate alumino-silicate mineral.

The lowering of the symmetry from typical (for cancrinite group) hexagonal one is due to ordering of Si and Al.[2] It has a Mohs hardness of 5.5 to 6 and a specific gravity of 2.55 to 2.65.

It was discovered in 1968 in the Lapis-lazuli Mine, Sar-i Sang, Badakhshan Province, Afghanistan and takes its name from that country.

It has also been described from localities in Germany, Italy, the Pamir Mountains of Tajikistan, near Lake Baikal in Siberia, New York and Newfoundland.

It occurs as veinlets in lazurite crystals in the Afghan location and in altered limestone xenoliths within pumice in Pitigliano, Tuscany, Italy.