The Doug copper showing is only roughly located, in the Doug group of claims in the Tuchodi Lakes area in the Muskwa Ranges of the Northern Rocky Mountains (Mineral Development Sector, Corporation Files - National Mineral Inventory). It has been provisionally placed north of Tuchodi Lakes, but there is an uncertainty of many kilometres.

The occurrence is in Middle Proterozoic (Helikian) sedimentary rocks of the Muskwa Assemblage in the core of the Tuchodi Anticline, an open fold structure which formed on a ramp of a major northeast-verging thrust in the region (Geological Survey of Canada Map 1343A; Geological Society of America, Geology of North America, Volume G-2, pages 111, 639, 642). The rocks belong to Ancestral North America (Geological Survey of Canada Map 1713A). Northeast- to northwest-striking diabase dykes of Proterozoic age are common in the region, and many are associated with copper mineralization.

Based on its provisional location, the showing is hosted in the Henry Creek Formation of the Muskwa Assemblage, which comprises mainly calcareous mudstone, with minor sandstone and limestone (Geological Survey of Canada Memoir 373, Paper 67-68). Very little information on the deposit is available. A vein was traced along strike for 70 metres and down dip (presumably by diamond drilling) for 36 metres. Assays from 5 trenches, across widths ranging from 2 to 4.5 metres, averaged 4 per cent copper (Mineral Development Sector, Corporation Files - National Mineral Inventory).