The D4 (C showing) occurrence is located about 64 kilometres southeast of the community of Dease Lake.

The area is underlain by Upper Triassic to Lower Jurassic green and purplish red volcanic and volcaniclastic rock of andesitic composition. These are interstratified with lithic sandstone and conglomerate and overlain by a black argillite unit, possibly of the Lower Jurassic Takwahoni Formation (Laberge Group). The strata dips gently to the east (5 to 30 degrees).

A quartz vein on the D4 claim was discovered in 1982 and upon analysis yielded 0.82 gram per tonne gold and 6.51 grams per tonne silver (Assessment Report 10699). Three more quartz veins, from 1 to 5 centimetre thick, were later exposed by trenching; the veins contain galena and sphalerite. The shear zones in which they occur are up to 0.5 metre wide. Gold values range from 0.82 to 0.89 gram per tonne. In 1983, a 6-metre chip sample of tuffs and black shale hostrock yielded 0.55 gram per tonne gold (Assessment Report 11279).

From 1981 to 1987, the D claims were worked by Pamicon Developments in conjunction with Orsina Resources and/or Balance Resources. Work included geochemical programs, geological surveys and trenching. Northair Mines Ltd. held the property as the McBride claim in 1990 and collected 34 rock samples. See also related showings D1 (104I 093) located 1.8 kilometres southwest, and D8 (104I 101) located 1.5 kilometres southwest.