Ownership: 100% Aura
Aura’s wholly owned Häggån Project is in the top two largest undeveloped uranium resources globally, covering 110 square kilometres in the Storsjön District in Central Sweden. The Häggån Project forms part of a large uranium field where the uranium occurs with molybdenum, nickel, vanadium and zinc in black shales. The first uranium operation from the Alum Shale began at Kvarntorp in southern Sweden in 1965. The shales form a near continuous sheet throughout the section of the project that Aura drilled in its 2008 -2011 programmes, with thicknesses ranging between 20 metres to more than 250 metres.
In relation to metallurgical testwork, Aura has received exceptional results from two stages of bacterial heap leaching, with tests indicating up to 85% uranium extraction, as well as 58% nickel and 18% molybdenum. Bacterial heap leaching is a widely-used, low cost extraction technology which has demonstrated value at the Talvivaara nickel copper mine in Finland. Click here to view the bacterial heap leaching process.