The Alexander Bar agate occurrence is situated in an area underlain by Permian to Jurassic Hozameen Complex rocks which have been extensively faulted along a complex part of the Fraser fault system. These rocks include chert, pelite, mafic volcanics, minor limestone, gabbro and ultramafic rock. The occurrence is located within a few kilometres of the eastern contact of the Late Cretaceous Scuzzy pluton. No other details are available.