The JW occurrence is located about 80 kilometres east-southeast of the community of Dease Lake.

The JW area is underlain mainly by Mississippian to Triassic Cache Creek Complex rocks including metavolcanics (greenstone), metasediments and tectonically emplaced ultramafic rocks. The Cache Creek Complex ultramafic rocks consist of peridotite, dunite and pyroxenite which are generally serpentinized.

The JW property was originally staked in 1973 to cover several small in situ nephrite jade deposits in an area of ultramafic rock and several localities where jade occurs as boulders (float) and/or talus. In 1976, 25 jade talus blocks on a south-facing slope were tested by packsack drilling. All the core was reported to be poor quality, greyish green talcy jade.