Southern Gawler Ranges Project
EL 3461, 3598, 3612 and 3849
InterMet is targeting Olympic Dam-style Cu-Au-U-REE and Orogenic/Epithermal Gold mineralisation.
Located within the Gawler Range Volcanic Province close to the contact with intrusive Hiltaba Suite granites, the Southern Gawler Ranges Project has potential to host an Olympic Dam-style Iron Oxide Copper Gold (IOCG) deposit as well as orogenic gold within Hiltaba Suite age structures.
This area was tectonically active during the Hiltaba Suite magmatic event, the major mineralising event on the Gawler Craton. Anomalous gold within a zone of quartz-flooded volcanics in the Cooria Hill/Acraman area suggests a hydrothermal system within the volcanics and elevated rare earth elements indicate a possible Olympic Dam system.
Olympic Dam-style Iron Oxide Copper Gold Exploration
The project occurs near the southwestern margin of the Gawler Range Volcanics, which in the past has been interpreted as a zone of volcanic vents, an important feature in the search for Olympic style dam deposits.
Previous exploration by PIMA highlighted significant anomalous gold and highly anomalous Cerium, Lanthanum, Neodymium and Yttrium values as well as anomalous uranium (5 ppm) within quartz flooded volcanic units at the Yarna Prospect within the northern part of the project area. This indicates potential for Olympic Dam style mineralisation at depth.
Orogenic and Epithermal Gold
The area has had minimal exploration for gold and previous exploration has shown that this area contains anomalous gold. The Hiltaba Suite/Gawler Ranges Volcanic magmatic event was widespread across the Gawler Craton and was a major mineralising event. The timing of gold mineralisation on the Gawler Craton at ~1590 Ma, suggests that the Hiltaba Suite was a source of heat and possibly fluids for deposits/prospects including Tarcoola (Au), Tunkillia (Au), Nuckulla Hill (Au), Menninnee Dam (Pb-Zn-Ag), Barns (Au) and possibly Weednana (Au).
Regional mapping south of Lake Acraman reported volcanics flooded with quartz, which suggests major fluid flow. Anomalous rock chip samples up to 32 ppb Au from this area also highlights the potential for gold mineralisation associated with Hiltaba Suite intrusives intruding the Gawler Range Volcanics.
InterMet is currently considering 1km x 1km gravity survey over the four tenements.
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