The Sweet Grass and Wilmer Crown-granted claims are located on Mount Carpenter (Goat Mountain) southwest of the Capello claim group (082KSW003). The claims are 1 kilometre northwest of the centre of New Denver. Production in 1900 and 1901 totalled 7 tonnes, resulting in 16,733 grams of silver.

There is little information on the property, however, it is likely that the veins on it are extensions of the Capello vein system which consists of four or five parallel quartz-carbonate veins in faults cutting quartz monzonite of the Mount Carpenter stock. The veins strike 025 degrees, dipping 35 to 40 degrees to the northwest. Vein widths average 15 centimetres, but reach 90 centimetres, including brecciated wallrock. Mineralization within the veins consists of tetrahedrite, argentite, native silver and pyrite, with gold apparently associated with the pyrite.

The host Mount Carpenter stock is mainly composed of biotite hornblende quartz monzonite (GSC Open File 432) of Mesozoic to Tertiary age. The stock intrudes Triassic Slocan Group clastic sedimentary rocks which include phyllite, argillite, quartzite, tuffaceous rocks and minor limestone.