The Whopper North (Meachen North) occurrence is located at an elevation of approximately 1910 metres on a south-facing slope, north of Meachen Creek and approximately 3.8 kilometres north-northwest of the north end of White Boar Lake.
Regionally, the area is underlain by siltstones, greywackes, quartzites and phyllites of the Proterozoic Upper and Middle Aldridge and Lower Creston formations (Purcell Supergroup), intruded by a small quartz monzonite stock, possibly Cretaceous. The Lower Creston Formation consists mainly of laminated to thickly bedded argillites and siltites with minor fine-grained quartz wackes. The rocks are waxy green to olive in colour with tan-weathering surfaces, wavy bedding and abundant mudcracks. Rocks of the Upper Aldridge consist of a relatively homogeneous unit with occasional thin interbeds of rusty weathering light grey quartzite and laminated light and dark grey argillaceous quartzite. Locally, these rocks are intruded by gabbro or diorite sills and dikes of the Moyie Intrusions. The intrusive stock consists of medium- to fine-grained massive biotite monzogranite. The sediments adjacent to the intrusion have been altered to produce concentric zones of biotite hornfels and siliceous siltstone.
Locally, polymetallic quartz-sulphide veins (galena-arsenopyrite-pyrite±sphalerite) associated with nose folds and iron-oxide alteration are exposed in a historical pit. The veins are up to 0.6 metre wide and display parallel cleavage in mixed Middle Aldridge Formation sediments.
In 2019, a sample (SK19-06) assayed 5.99 per cent lead and 98 grams per tonne silver (Assessment Report 38614).
Work History
The area has been explored in conjunction with the nearby Whopper (MINFILE 082FNE001) occurrence, and a complete exploration history of the area can be found there.