The Don occurrence is situated within the Mitchell Range of mountains, 4 kilometres north of the Nesabut Peaks and approximately 31 kilometres southeast of Takla Landing.

The area is underlain by granitic rocks assigned to the Late Triassic-Early Jurassic Topley intrusions, which form an elongate pluton underlying the majority of the range. The most prevalent rock type is a pink-grey, medium-grained, equigranular to porphyritic quartz monzonite into which a younger phase of grey, medium-grained, equigranular biotite quartz monzonite has intruded. Local weak to pervasive argillic alteration is the predominant type of alteration observed in these rocks.

Narrow (1 to 2-millimetre wide) quartz-molybdenite veinlets form a stockwork across several widely spaced, 6 to 10-metre wide zones of weakly kaolinitized monzonite along a ridge crest 4 kilometres north of the Nesabut Peaks.

A diamond-drill hole (DJD #3) collared in late-phase quartz monzonite to the north of this mineralization intersected a minor clot of molybdenite-chalcopyrite-pyrite mineralization in a quartz vein. No assays were reported.

Work History

In 1978 and 1979, Placer Development Ltd. completed program of silt and soil sampling on the area as the Don, John and Dairy claims. In 1980, a three drillholes, totalling 59.7 metres, were completed on the claims.