The mineral types are many, and is host to gold, copper, zinc, tantalum, silver and potash.
en.wikipedia.org Notable pusher applications include inorganics like ammonium sulphate, soda ash, potash, sodium bicarbonate, sulphates and sulphides, borax, borates, chlorates and chromates.
en.wikipedia.org Some of the earliest known fluxes were carbonate of soda, potash, charcoal, coke, borax, lime, lead sulfide and certain minerals containing phosphorus.
en.wikipedia.org Much of the postwar holdings were in these fields, and the railroad moved into bulk commoditieswheat, potash, coal and sulphur.
en.wikipedia.org