Crandallite is a calcium aluminium basic phosphate mineral.

It has ideal formula CaAl3(PO4)2(OH)5·H2O.

Crandallite was named after Milan L. Crandall Jr, who worked for Knight Syndicate.

This mineral is found in laterite and in alteration products of phosphate rich pegmatites.

This article about a specific mineral or mineraloid is a stub.