The Bissett (San Antonio) gold mine is located within the Rice Lake greenstone belt at the

west end of the Archean Uchi Subprovince. Gold mineralisation is confined to the San

Antonio Mine Unit (“SAM Unit”) a layered, sill-like gabbroic unit that intrudes the Bidou

Lake Subgroup. In the mine area, the Bidou Lake is exposed on the northeastern limb of an

anticline, which is the dominant regional structure of the Rice Lake area. In the mine area

the rock sequence strikes 125

The SAM Unit is a 50 to 600 foot thick, layered, tabular, sill-like gabbroic intrusion and has

a strike length of approximately 4 miles. Half of the strike length of the SAM unit lies on

the Bissett Mine mining lease. The remainder lies on the adjoining San Norm property to

the east.

Gold mineralisation in the Bissett Mine occurs in quartz-veins systems hosted almost

exclusively within the SAM unit. Veins generally terminate within the SAM gabbro near

the contact with the host Bidou Lake rocks. Rarely, the veins may extend up to 10 feet into

the Bidou Lake. The SAM unit is inhomogenously deformed and varies from massive and

weakly strained to well foliated and/or lineated. The SAM unit is distinctly more competent

than the surrounding felsic volcanic rocks of the Bidou Lake Subgroup.

Prior to and during deposition of the gold mineralisation, the SAM unit was subjected to

regional sinistral (left-hand) strike-slip deformation with the hosting Bidou Lake rocks

shearing along foliation plans subparallel to their contact with the SAM Unit. These

regional stresses caused secondary shear and tensional fractures to occur in the more

competent SAM unit. The intensity of shear and tension fractures appears to increase where

the SAM unit thickens which is probably related to the thick portions acting as a stress

resistant “buttress” that would focus the regional stress more strongly on the east side of the

thick areas.

The bulk of the gold-bearing quartz veins occur as either 16-Type shear zone veins or 38-

Type tensional fracture stockwork veins or as a complex combination of the two vein types