Group 1: Consists of Yukon industrial mineral and minor metals with proven resource which could be developed, given a change in favourble market conditions: Industrial: barite, Minor: antimony, platinum group elements.
Group 2: Consists of industrial minerals and minor metals known to occur in the Yukon for which there is a reasonalbe chance of discovering economic deposits: Industrial:asbestos, barite, cassiterite, chromite, clay minerals, feldspathic minerals, fluorspar, garnet, gemstones, graphite, gypsom, limestone, magnesitemanganese oxides, magnetite, mica, nepheline syenite, olivine, peat, phosphate minerals, rare earth elements, silica and quartz, strontium, sulphur, talc, titanium dioxides, zircon. Minor: bismuth, cadmium, chromite, cobalt, niobium, germanium, mercury, molvbdenum, rhenium, selenium, tellurium, tungsten, thorium, vanadium.
Group 3: Based on favourable geology, includes industrial minerals and minor metals which, though presently not documented in the Yukon, could be expected to occur in economic deposits: Industrial: abrasives, bentonite, clay minerals, diatomite, gemstone, sillimanite, andalusite, perlite, pumice, tephra, Minor: beryllium, gallium, indium, lithium, scandium.
Group 4: Includes industrial minerals and minor metals which have good world market forecasts and/or would be sufficiently cost competitive to encourage exploration: Industrial: dimension stone, celestite, clay minerals, gemstones, graphite, industrial diamond, magnesite, mica, peat, phosphate, rare earth elements, titanium minerals, zircon. Minor: antimony, beryllium, bismuth, niobium, germanium, platinum, and all 'minor metals' recovered as by-products from base and/or precious metal mines.
Group 5: Includes industrial minerals which are known to occur in the Yukon, but for which systematic field evaluation is required to document their occurrence, depositional environment, physical and chemical characteristics and reserve potential, in order to determine their development potential: Industrial: dimension stone, limestone, structural clays, peat, sand, and gravel deposits.
