The Green Gold occurrence area is underlain by upper greenschist/lower amphibolite facies rocks of the Permian(?) to Lower Cretaceous Bridge River Complex (Group) rocks comprising siliceous and actinolite schists and local biotite-garnet schists. These occur in fault contact with Bridge River serpentinite and are intruded by Late Cretaceous Scuzzy pluton granitic rocks.

In several locations, "vesuvianite-type jade" occurs within serpentinite in thinly bedded, fine-grained, argillaceous sediments. Sediments are intruded by porphyritic hornblende diorite sills.

There are several differing descriptions of the mineralization. The following description is taken from a 1975 report by the then District Geologist, G.P.E. White. Vesuvianite is associated with grossularite and thuringite. Where vesuvianite is the principal mineral, grossularite occurs as a reddish aggregate and veins up to 10 centimetres wide within the green vesuvianite. Where grossularite is the principal mineral, it is buff-coloured with vesuvianite occurring as green flecks or indistinct aggregates. Thuringite occurs as 1 to 5 millimetre veinlets in the buff grossularite or disseminated in the vesuvianite.

In the same report "considerable quantities" were still present, however a 1985 assessment report noted that the jade has been exhausted. Also, in 1973, 6.8 tonnes of vesuvianite were shipped although this was not substantiated by Minister of Mines Annual Reports (Assessment Report 14885).