The Spuzzum jade occurrence is situated in an area dominated by metamorphic rocks of the Cretaceous Custer Gneiss, which include pegmatitic granite gneiss, pelitic schist, amphibolite and minor marble and ultramafic rocks. These rocks are in contact with intrusive rocks assigned to the Cretaceous Spuzzum Intrusions along the Hope fault. Agate and jasper are reported to occur here as well as jade.