The Calf Moose occurrence is located approximately 18 kilometres north-northwest of the Lawyers mine (094E 066), about 280 kilometres north of Smithers. It lies within the Omineca-Cassiar mountains at the southern end of the Toodoggone Gold Camp.

The showing is situated within a Mesozoic volcanic arc assemblage which lies along the eastern margin of the Intermontane Belt, a northwest-trending belt of Paleozoic to Tertiary sediments, volcanics and intrusions bounded to the east by the Omineca Belt and to the west and southwest by the Sustut and Bowser basins. Permian Asitka Group crystalline limestones are the oldest rocks exposed in the region. They are commonly in thrust contact with Upper Triassic Takla Group andesite flows and pyroclastic rocks. These Takla rocks have been intruded by plutons and other bodies of the mainly granodiorite to quartz monzonite Early Jurassic Black Lake Suite and are in turn unconformably overlain by or faulted against Lower Jurassic calcalkaline volcanics of the Toodoggone Formation (Hazelton Group).

The dominant structures in the area are steeply dipping faults which define a prominent regional northwest structural fabric trending 140 to 170 degrees. In turn, high angle northeast-striking faults (approximately 060 degrees) appear to truncate and displace northwest-striking faults. Collectively these faults form a boundary for variably rotated and tilted blocks underlain by monoclinal strata.

The Calf Moose showing is underlain by intermediate porphyritic rocks of the Toodoggone Formation. These include feldspar hornblende crystal and crystal-lapilli tuffs, and tuff breccias, a thin ash-fall tuff and lesser dacite porphyry flows. Cutting this sequence is a small diorite plug and diorite porphyry. Narrow and scattered basalt and andesite dikes are common to the east of the Calf Moose showing. The volcanic sequence appears to dip moderately to the northeast. Observed faults have northwest and east-southeast to southeast strikes. The most important structural feature is a vertical shear and fracture zone that extends northwestward from McClair Creek to Moosehorn Creek.

Initial property exploration in the area of the Calf Moose showing was focussed on lead and zinc sulphides in quartz veins about 1.5 kilometres to the east. Early geochemical surveys outlined an area of about 1500 metres long with anomalous, silver, lead, zinc, and copper in soils. Follow-up geochemistry, geophysics and geology revealed local mineralization, confirming previous geochemical anomalies.

Mineralization consists of a 1.3-metre-wide quartz-carbonate vein hosting galena mineralization occurring in crystal and crystal-lapilli tuffs. This vein was intersected in drillhole MM-3 at 39.3 metres. The drill program was conducted in 1974 to test several selected induced polarization conductors and subsequently re-examined, sampled, and assayed in 1982. Vein-hosted mineralization in the area has a peripheral zone of disseminated base metal sulphides surrounded by weak to moderate pyritization (up to 15 per cent). Mineralization occurs as discrete grains or as discontinuous blebs. Sample 41110, from a drill core intersection of this vein, yielded 50.0 grams per tonne silver, 1.22 grams per tonne gold, 0.274 per cent zinc, 0.19 per cent lead and 0.0093 per cent copper (Assessment Report 10291).

Refer to Porphyry Pearl (094E 084) which is the main prospect of a property worked on in the mid to late 2000s that contained Moose 1 (094E 031), Porphyry Pearl, Scree 3 (094E 165), Scree 1 (094E 166), Calf Moose, and Horn (094E 188). Work history for the Calf Moose area is given in the Porphyry Pearl prospect. Work on the Calf Moose includes drilling in 1974, GIS compilation in 2005, and magnetic surveying in 2006.