The TDM showing is located is located at an elevation of approximately 1300 metres in an east-facing gully, approximately 800 metres west of the north end of Cougar Lake.

The area is situated on the eastern flank of the multistage Upper Triassic to Lower Jurassic Guichon Creek Batholith. The area is underlain primarily by medium- to fine-grained Guichon variety granodiorite of the Highland Valley phase of the batholith. These rocks grade westward to Chataway variety granodiorite. Two major structural patterns trending northeast and northwest occur on the property.

Locally, fine-grained disseminated native copper occurs in Guichon (Witches Brook B) granodiorite on the former TDM 25 claim.

Another zone of mineralization is reported on the former Tom 12 claim, located approximately 1.5 kilometres north of the TDM occurrence, and comprises a quartz diorite hosting chalcocite and trace malachite on fractures.

Work History

In 1964, Mamit Lake Mines completed a 7.5 line-kilometre induced polarization survey and a 22.2 line-kilometre ground magnetic survey on the area immediately north of the occurrence as the MLM claims. In 1967, a 3.4 line-kilometre induced polarization survey was completed on the MLM claims.

In 1968, King Resources Co. completed a program of geological mapping on the area as the Ant, In, Jay, Len, Rex, Rob, Sho, T.D.M. and Wiz-Dot claims of the Chataway property.

In 1971, Canadian Superior Exploration Ltd. completed a 67.2 line-kilometre induced polarization survey on the area immediately west of the occurrence as the Chataway property. The following year, Chataway Explorations Ltd. completed a program of soil sampling on the area as the TDM claims. Also at this time, a 1112 line-kilometre airborne magnetic survey was completed on the area as the MLM and GCM claims.

In 1981, Cominco Ltd. completed an induced polarization survey and ground magnetic survey on the area immediately north of the occurrence as the MJC and Antler claims of the Gump property. The following year, an induced polarization survey was completed on the area as the Antler, Buck, Elk, Lake and Score claims of the Gump property.

In 1999, Tarco Oil and Gas Ltd. held the area as the as the Gypsy-Roy property.

In 2006, Gary Brown completed a program of prospecting and photo-geological interpretation on the area as the Chat and Skuhun claims of the Copper Hill property.

During 2009 through 2011, the area was examined by Highbank Resources Ltd. and Moag Copper-Gold Resources Inc. as the Highland Valley property. Programs of geological mapping, soil sampling and an induced polarization survey were completed during this time.

During 2013 through 2019, Happy Creek Minerals Ltd. completed programs of geological mapping, geochemical (rock, silt and soil) sampling, a 32.3 line-kilometre induced polarization survey and re-interpretation of historical airborne geophysical data on the area as part of the Rateria-West Valley property.

Also in 2018 and 2019, Granby Gold Inc. completed programs of geological mapping and soil sampling on the area as the Mamit Lake property.