The Lunar Creek 21 occurrence is located on at an elevation of approximately 1940 metres on a northeast-trending ridge, approximately 2 kilometres north of Lunar Creek and 14 kilometres south of the Frog Lakes.

Regionally, the area lies on the western edge of the Omineca Belt near the Kutcho fault, marking the boundary with rocks of the Intermontane Belt. The area is underlain by Early Jurassic granodioritic intrusive rocks of the Pitman Batholith with minor roof pendants of metavolcanic and metasedimentary rocks. Early regional mapping correlated these rocks with the Devonian to Permian Asitka Group based on lithological similarities (Geological Survey of Canada Open File 483). Fossil evidence from later regional mapping dates least part of the sequence as Mississippian (Geological Survey of Canada Paper 80-1B, pages 207-211). A tentative age of Devonian to Permian is given to these metamorphic rocks. To the west lie ultramafic rocks of the Middle Triassic Lunar Creek Complex.

Locally, a variably pyroxene-biotite-chlorite–altered intrusive(?) hosts disseminations, pods and stringers of bornite, chalcopyrite and pyrite with malachite and hematite alteration minerals.

In 2012, a sample (129665) assayed 1.20 per cent copper, 9.7 grams per tonne silver and 0.522 gram per tonne gold, whereas samples taken near the mountain peak to the northeast yielded up to 0.138 per cent copper and 0.152 gram per tonne gold (Assessment Report 33484).

Work History

During 1971 through 1976, El Paso Mining and Milling Co. completed programs of prospecting, geological mapping and geochemical sampling on the area as the West claims.

In 2012, Stratton Resources Inc. completed a program of prospecting and rock and silt sampling on the area as the Lunar 1-37 claims. The following year, a 1002.0 line-kilometre airborne magnetic and radiometric survey was completed on the area. In 2014, a program of reprocessing and modeling of previous airborne magnetic and radiometric data was completed.