The Tro area is underlain by the Upper Cretaceous granodiorite-quartz monzonite Troitsa stock (Bulkley Plutonic Suite). The stock intrudes volcanics of the Cretaceous Kasalka Group and the Jurassic Hazelton Group (Telkwa Formation).

Sampling in 2013 resulted in a number of mineralized samples being taken in a discrete area south of the Main zone. A 5 to 10 centimetre wide quartz and sulfide filled fracture assayed 0.069 per cent copper 6.7 grams per tonne silver and 0.126 gram per tonne gold (Assessment Report 34785). A 30 centimetre wide sample of altered material with malachite staining and chalcopyrite on fracture surfaces was observed and chlorite and sericite alteration is noted. A high grade sample of material from a 1 centimetre veinlet within the altered zone assayed 1.8 per cent copper, 16.7 grams per tonne silver and 0.12 gram per tonne gold (Assessment Report 34785).

In the same area, a 20 centimetre chip across a well mineralized chalcopyrite, molybdenum and pyrite vein assayed 0.01 per cent copper, 0.284 per cent molybdenum, 2.4 grams per tonne silver and 0.06 gram per tonne gold (Assessment Report 34785).

Refer to Troitsa Main for details of the Troitsa property work history and Fab (093E 041) for related geology and property work history details of the Cole Creek property which the Troitsa property was part of from 2010 to 2013.