The Letain Creek Jade occurrence is located about 85 kilometres east of the community of Dease Lake.

The Letain Creek Jade area is underlain by northwest trending Mississippian to Triassic Cache Creek Complex rocks including metavolcanics, metasediments and tectonically emplaced ultramafic rocks of upper Mississippian to Permian age. The Cache Creek ultramafic rocks consist of peridotite, dunite and pyroxenite which are generally serpentinized.

Between 1975 and 1978, Nephro-Jade Canada Limited drilled numerous nephrite jade placer boulders along Letain Creek, south of Wolverine Lake and upstream toward the confluence of the Provencher Lake stream tributary. Nephro-Jade also worked leases to the immediate northwest of Wolverine Lake along Blick Creek. Assessment Reports 6959 and 7258 identify a number of placer mining leases along these stretches and also around Provencher Lake which were worked at the same time. Subsequent mining of the marketable jade boulders occurred in 1977 and 1978, apparently mainly in the Provencher Lake area but probably also along Letain Creek.

In 2016, Cassiar Jade Contracting Inc. conducted drilling, trenching, and mining up to 200 tonnes. In 2017, Cassiar Jade Contracting Inc. conducted mining and trenching (production not known).

Prospecting in 2017 by Cassiar Jade Contracting Inc. found a series of boulders 1.5 kilometres east of the occurrence on the neighbouring Ouch property. The boulders showed a high potential for viable jade. Two petrographic samples were taken.

Please refer to the Provencher Lake jade occurrence (104I 092) located about 6 kilometres south-southwest for further details.