The upper parts of Sowchea Creek drain an area underlain by Jurassic granitic rocks. Fine placer gold occurs mainly in the lower 0.9 to 1.2 metres of gravel overlying a clay seam that acted as a false bedrock. A producer at one time, gold production from these operations has not been recorded.

Sampling work on the placer deposit was first performed in 1938 by H.M.N. Fraser. This work covered two leases on the upper part of the stream and returned an average of 0.65 grams per cubic metre over a possible 383,000 cubic metres (Property File Cyprus Anvil Acteon Gold Mines Ltd., 1957). In 1946, the Quebec Gold Mining Corporation performed 63 bulk pit samples. These returned an arithmetical average of 0.43 grams per cubic metre (Property File Cyprus Anvil Acteon Gold Mines Ltd., 1957). Acteon Mines Limited conducted further sampling in 1952.