The Stoner workings are located on the Chum claims north of Boundary Creek 13 kilometres north of Hyder, Alaska. Houston Oil and Minerals Corporation explored the property in 1979.

Located in the Intermontane Belt, the area, bounded on the west by the Coast Crystalline complex and on the east by the Bowser Basin, is part of the Stikinia Terrane.

Mineralization is hosted by the Upper Triassic to Lower Jurassic Hazelton Group Unuk River Formation metavolcanics. The Hazelton Group is a northwest trending steeply east dipping belt of folded andesitic lapilli tuffs, flows and breccia containing a thick se- quence of argillite and siltstone infolded along a synclinal axis. The sequence is intruded by the Early Jurassic Texas Creek plutonic suite of dacitic porphyry dykes, Eocene granitic Hyder intrusives and lamprophyre dykes.

The Stoner shaft was sunk in silicified andesite tuff on a 2 metre wide massive sulphide shoot. The shoot consists of quartz min- eralized with coarse-grained pyrite and wispy bands of sphalerite and galena. The shoot strikes approximately east and dips northward.

Patchy and discontinuous mineralization is exposed in a series of trenches and adits over 76 metres. This mineralization occurs inter- stially in a siliceous tuff or volcanic breccia and consists of semi- massive pyrite, sphalerite, galena and arsenopyrite. Less commonly pyrite, euhedral arsenopyrite, pyrrhotite and chalcopyrite occur in a quartz matrix.

The 9 metre wide western open cut exposes a 5 centimetre thick shoot of pyrite, sphalerite and minor galena, tetrahedrite, pyrr- hotite, and calcite gangue.

Other mineralized shoots in the area are reported to have yielded 9.95 to 13.27 grams per tonne gold equivalent (6 to 8 dollars gold and silver per tonne, USGS Bulletin 807).