<unk>  (AlPO4) is a chemical compound. The anhydrous form is found in nature as the mineral berlinite.  Many synthetic forms of anhydrous<unk>  are known. They have framework structures similar to zeolites and some are used as catalysts or molecular sieves. The dihydrate, AlPO4·2H2O is found as the minerals variscite and meta-variscite. A synthetic hydrated form, AlPO4·1.5H2O is also known. Commercially, an<unk>  gel is available.
Aluminium phosphate
Calcium phosphate
Phosphate
Chromate
Phosphonic acid
Hypophosphorous acid
Calcium oxalate
Phosphorous acid