The Delaware No. 2 (Lot 7054) is a small past producer of silver, gold, lead and zinc (259 tonnes from the years 1929, 1947-1950). The adjacent Crown grants are the Virginia (Lot 7055) and Ohio (Lot 7056), all on the south-facing slope of Rolf Mountain, 8 kilometres north of Creston.

Hostrocks consist of quartzites of the Aldridge Formation and a gabbro sill of the Moyie intrusions, both of the Purcell Supergroup of Middle Proterozoic age. A wide zone of shearing strikes 007 degrees, dipping 70 degrees west, approximately parallel to bedding, and is cut by a quartz vein varying from less than 10 centimetres to 1 metre in thickness, striking 330 degrees and dipping 53 degrees west. The vein contains pods, bunches and lenses of galena over a strike length of 150 metres, and was mined on two levels approximately 40 metres apart. Rare chalcopyrite is present, as well as minor pyromorphite (lead phosphate) presumably due to surface oxidation.

Diamond drilling in 1952 and electromagnetic surveys in 1954 failed to extend the known mineralization, although trenching did extend the strike of the quartz vein.