Wilcherry Hill - Geology & Resources

Geology

The Wilcherry Hill Project area is situated in the south-eastern part of the Gawler Craton, an ancient crystalline shield comprising Archaean to Mesoproterozoic age metasediments, volcanic sediments and granites. The craton is host to a number of major mineral deposits, including Olympic Dam, Prominent Hill and the Middleback Range iron deposits. The mineral deposits are typically associated with the intrusion of Hiltaba Suite granites of around 1600Ma.

The project area is dominated by metasediments of the Palaeoproterozoic Hutchison Group which unconformably overlie early Palaeoproterozoic Miltalie Gneiss and Archaean granulites and gneisses of the Sleaford Complex. The Hutchison Group consists of metamorphosed clastic marine sediments, iron formations, carbonates and mafic volcanics. Locally, the Hutchinson Group is represented by the basal Warrow Quartzite, overlain by dolomitic marble, calc-silicates (the Katunga Dolomite) and amphibolites, cherty BIF and pelitic schists (the Middleback Subgroup).

Deformation and metamorphism during the Kimban Orogeny (1850-1700Ma) was accompanied by the syntectonic intrusion of the Moody Suite granites. The result is a northwest trending igneous - metamorphic complex of metasedimentary rocks, amphibolites, schist, gneiss and granite. Palaeoproterozoic units are overlain by the younger Gawler Range Volcanics and are intruded by the contemporaneous Hiltaba Suite Granites. The Hiltaba Suite/Gawler Range magmatic event (1595-1575 Ma) represents a major Mesoproterozoic tectonic/tectonothermal event which affected much of the Gawler Craton; it is this event which is believed to have been responsible for widespread gold, uranium and base metal mineralisation.

Resources

NB: This indicated resource was independently verified and JORC Code classified by independent SRK Consulting.

Click here for full detailed resource table of the Wilcherry Hill Project.