The Arrow Tungsten occurrence is part of the Stewart property and is located on the north side of Stewart Creek, 3.2 kilometres west-northwest of Ymir. The claims were staked in 1942, but an adit was already present on the property at that time. The occurrence is immediately north of the Phase II breccia zone of the Stewart 2 (MINFILE 082FSW229) occurrence.

The area is underlain by siltstone, sandstone, conglomerate, argillite and minor limestone units of the Lower Jurassic Hall Formation, Rossland Group. Granitic rocks of the Early to Middle Jurassic Nelson Intrusions outcrop in the area. The area is situated on the eastern limb of the Hall Creek syncline and just north of the Stewart Creek fault.

Fine-grained disseminated scheelite mineralization occurs in skarn bands interbedded with argillite and other sediments. The skarn predominantly comprises diopside with locally abundant garnet. Mineralization also includes minor sphalerite, trace molybdenite and rare chalcopyrite and galena. The mineralization may occur across the entire band or as one or more bands within it.

The skarn averages approximately 1.5 metres in width but is developed erratically along a north trend, conformable to the regional stratigraphy, on the northwest margin of the intrusive complex that hosts the Stewart 2 occurrence. The best section is approximately 150 metres long and occurs 45 metres south of the adit. The northern part of this section is a skarn band 1 to 3 metres wide hosting mineralization across an average width of 1 metre. The southern portion is a skarn band 0.60 to 5 metres wide.

Tungsten values vary widely from 0.05 per cent to 0.5 per cent tungsten trioxide with local highs up to 2 and 3 per cent. In 1951, mineralization in trenched zones (A,B,C) was estimated at 297 tonnes per vertical foot averaging 0.50 per cent tungsten trioxide, but subsequent drilling failed to prove these reserves.

In 1977, Union Carbide explored the Arrow Tungsten area with a geochemical survey for tungsten, molybdenum, copper and zinc.

In 2007, Emgold Mining Corp. conducted trenching and diamond drilling on the Steward property, focusing on the Arrow Tungsten showing. The highlights of this program included drillhole STW0730, which returned 1 metre grading 1 per cent tungsten and 0.095 per cent molybdenum, and drillhole STW0707, which returned 3.05 metres grading 2.256 grams per tonne gold (Assessment Report 29755).

For a full property history, see Stewart 2 (MINFILE 082FSW229).