The Arrowstone (Mowich Lake Gold) occurrence is located on the west bank of the Deadman River, approximately 300 metres south-southwest of Mowich Lake and 75 metres southwest of the bridge crossing the Deadman River.

The area is underlain by the Upper Triassic Nicola Group which is exposed in a window eroded through overlap assemblage volcanic and sedimentary rocks of the Miocene Chilcotin Group (Open File 1989-21; Geological Survey of Canada Memoir 363). The overlap assemblage consists of two formations: The Deadman River Formation consists of diatomite-bearing lacustrine sediments, volcanic ash and clastic sedimentary rocks and is overlain by plateau lavas of the Chasm Formation. The Nicola Group rocks are comprised of augite andesite flows, polymictic volcanic breccias, which are interfingered to the south with volcaniclastic sediments, and minor limestone.

Locally, a slump or debris flow, located near the junction of two gullies, contains malachite-coated massive bornite-chalcocite float up to 6 centimetres in diameter in a weathered serpentinite. The mineralized fragments are limited to an exposure of 2 by 3 metres.

Several hundred metres uphill to the northwest, highly sheared and argillic-altered mafics host (epithermal) quartz-carbonate veins and stockworks with minor pyrite and chalcopyrite. Coarse gold has also been reported in select samples.

A second zone of (epithermal) quartz-calcite veining and stockworks in a silicified host is reported to be exposed over 200 metres by a roadcut located immediately north of Mowich Lake, approximately 1.5 kilometres to the north-northeast.

In 1988, two 11.4 kilogram bulk samples of mineralized material from the slump or debris flow averaged 0.7 gram per tonne gold, 4.8 grams per tonne silver and 1.05 per cent copper, whereas five select samples from the veins yielded up to 18.4 grams per tonne gold, 325.6 grams per tonne silver and 63.8 per cent copper (Property File - James F. Bristow [1988-06-01]: A Preliminary Report on the Arrowstone Project).

In 1983, the area was staked by Mr. M. Dickens of Savona and optioned to Canamax Resources Inc. Canamax completed a program of geological mapping; line cutting and magnetometer, induced polarization/resistivity and soil geochemical surveying. Northair Mines Limited optioned the property in 1984 and completed additional geological mapping and bulldozer trenching. In 1988, the property was optioned by Iron River Resources Limited and 8.2 kilometres of magnetometer and VLF-EM surveying were completed (Assessment Report 18167). In 1989, Iron River completed 1.0 kilometre of induced polarization surveying, 11.6 kilometres of magnetometer and VLF-EM surveying and five diamond-drill holes, totalling 200 metres.