The Lin 4 showing is located about 500 metres north of Kishinena Creek. In general, stratabound covellite, bornite and chalcocite occur at several quartzite horizons in the Helikian Purcell Group strata in the Lin claim area. The best mineralized beds are traceable laterally over a thousand metres with interruptions, and may reach up to 10 per cent sulphides over several centimetres. Malachite is widespread at surface and to a depth of about 1 metre. The thickness of these mineralized horizons rarely exceeds 1 metre. The area is underlain by siltstone, argillite, quartzite, argillite and siltstone, and dolomitic carbonate rocks of the middle Proterozoic Creston and Kitchener formations (Purcell Supergroup).
Minor mineralization consists of finely disseminated, or blebs (1 to 3 millimetres) of copper sulphides confined to quartzite beds. Where there is enrichment of copper sulphides, radiometric surveys also indicate anomalous radioactivity.
The Lin claims were staked in late 1969 by the Goble family (Kintla Exploration Limited) and optioned to Falconbridge Nickel Mines Limited. The claims were located from Kishinena Creek south to Starvation Peak. In 1970, Falconbridge completed a program of geological mapping on the area as the Lin claims (Assessment Report 2703). In 1974 or 1975, four short diamond drill holes, totalling 95.4 metres, were completed on the Lin 21 claim (082GSE049) (Assessment Report 5694) and 3 holes were drilled on the Opal claims (082GSE046) (Assessment Report 5696). In 1975, Aquitaine Co. of Canada Ltd. completed a program of regional geochemical sampling, geological mapping and prospecting in the area. In 1975, the Goble family (Kintla) reported that they discovered uranium in the red beds of the Grinnell Formation, and in some of the copper bearing beds of the Grinnell Formation. In 1976 a preliminary, radiometric survey was conducted on the Lin Claims (Assessment Report 6521). In 1978/79 a more detailed examination was undertaken and radiometric work was also carried out on the Opal claims (082GSE046) between Starvation Creek and the Montana border (Assessment Report 7678). Kintla reported that “copper-silver-molybdenum beds” were located in 1979.
