Australia's Altona Mining, which is being bought out by Canada's Copper Mountain, reported on Thursday that it had executed an offtake agreement with Glencore for the sale of copper/gold concentrates to be produced at the Cloncurry project, in north-west Queensland. Glencore, operates the Mt Isa copper smelter 180 km away and will take all the mine's production for a five-year term, with delivery set at the project's mine gate.