The Yankee (Yankee Corner) occurrence is located east of Limpid Creek at an elevation of approximately 1100 metres. The past-producing Bunker Hill (MINFILE 082FSW002) mine is located approximately 700 metres south.

Regionally, the area is underlain by quartzites, pelites, phyllites, limestone and argillites of the Cambrian Laib Formation and basaltic volcanic rocks of the Lower Jurassic Elise Formation (Rossland Group), which have been intruded by granodioritic rocks of the Cretaceous Anstey pluton to the northeast.

Locally, a former opencut exposes a skarned granite with at least two parallel, 25-centimetre wide, quartz veins hosting pyrite and possible molybdenite with limonite alteration. The veins strike 128 degrees and dip 70 degrees northeast. Tourmaline is also reported associated with the veins and a nearby breccia zone.

A short distance northwest a road cut (Limpid Roadside) exposes five oxidized and limonite-altered quartz veins hosting minor pyrite with trace galena and molybdenite. The veins strike 117 degrees and dip 72 degrees southwest. Some vein fractures are tourmaline coated.

In 1999, a sample from the Yankee opencut assayed 0.15 gram per tonne gold (Assessment Report 26159).

In 2003, a grab sample (BH-10) from the Limpid Roadside area assayed 0.218 per cent lead, 8.4 grams per tonne silver and 0.59 gram per tonne gold (Assessment Report 27231).

In 2004, a sample (0417) from the Limpid Roadside area assayed 0.13 gram per tonne gold and 0.049 per cent molybdenum (Assessment Report 27893).

In 2013, a rock sample (0654) from a thin quartz vein exposed in the Yankee opencut assayed 0.43 gram per tonne gold (Assessment Report 34713).

The area has been historically explored since the late 1800s in conjunction with the nearby Bunker Hill (MINFILE 082FSW002) past-producing mine. This occurrence is reported to possibly be the correct location of the Columbia (MINFILE 082FSW159) occurrence.

In 1971, Abella Resources Ltd. mapped and soil sampled the area as the Ness claims. In 1983, Rex Silver Mines Ltd. completed a program of rock, silt and soil sampling; geological mapping and a ground electromagnetic survey on the area as the Waneta 1-10 claims. In 1985, Noranda Mining and Exploration Inc. completed a program of rock and silt sampling, geological mapping and ground geophysical surveys on the area as the Swift 10 claim.

During 1988 through 1990, International Corona Corp. completed programs of soil and silt sampling, geological mapping and a 2660.0 line-kilometre airborne geophysical survey on the area as the Elise 1-61 claims.

During 1997 through 2002, William Howard completed programs of rock and soil sampling, geological mapping and a 5.2 line-kilometre ground electromagnetic survey on the area as the Cly property.