EL 2870 Ceduna covers 1390 square km located adjacent to the coast near Ceduna on north-western Eyre Peninsula. Minotaur believed that the area, which lies relatively close to the continental Fowler Suture Zone, was prospective for Proterozoic...
EL 2870 Ceduna covers 1390 square km located adjacent to the coast near Ceduna on north-western Eyre Peninsula. Minotaur believed that the area, which lies relatively close to the continental Fowler Suture Zone, was prospective for Proterozoic magmatic sulphide nickel, copper and cobalt mineralisation in the form of Voisey’s Bay type deposits, hosted by buried mafic and ultramafic igneous rock structures such as feeder pipes running between magma chambers and extending from them towards the land surface. During the first licence year, a review made of past exploration records that included limited historical drilling data (including drill cores) identified the presence in basement of peridotite and troctolite lithologies containing elevated contents of nickel, copper and platinum group elements (PGE). These known prospects, plus numerous probable shallowly buried (1% HM. These HM occurrences are located around one of the interpreted palaeogeomorphic headland features. The sands deposited around this headland are mainly fine grained, and comprise several different sequences as follows: 1. a light brown, silty to fine grained (Quaternary) sand which features calcrete and increasing slimes towards its base. 2. a dark orange-brown, fine grained sand, with decreasing slimes down its profile, and a lag layer at its base. 3. an indurated fine grained sand, well sorted, with HM mineralisation, low in slimes. 4. fine to medium grained sand, well sorted and low in slimes. 5. fine to medium grained sand, with decreasing sorting with depth. This sand is often cemented, with silica or iron coatings on the grains. Poorly sorted and intercalated with basement.
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