Just reading up on the exploration activities applied at Eva Copper Project, now owned by Harmony, which is just up the road from Cloncurry.
The Project is in North-West Queensland, approximately 76 kilometres (km) northwest of Cloncurry, and 194 km northeast of Mount Isa.
A Feasibility Study on the Eva Copper project states,
“Mineral exploration on lands of the Eva Copper Project dates back more than 40 years. The exploration database for the area contains information from numerous geological, geophysical, and geochemical surveys carried out by the current and previous operators, in addition to regional government data on geology and geophysics. Almost all data from historical geophysical and geochemical work is compiled in the Company database and has been used in the design and guidance of current exploration work.
The most useful historical geophysical work includesground and airborne magnetics and gravity surveys which, when combined withsoil geochemistry, provide good drill targeting tools.Induced polarization (IP) and electromagnetic (EM) geophysical surveys have also proven to be useful or have some benefit in the right circumstances. Continuous improvements in electronic instrumentation, computer data processing, inversion technology for geophysics, and multi-element analysis (particularly in handheld, portable X-ray fluorescence (XRF) units), provide significant rationale to continue geophysical and geochemical surveying on the property.”
“Extensive geophysical surveying, primarily induced polarization (IP) over the copper deposit areas, and Electromagnetic (EM) or Controlled Source Audio-Frequency Magnetotellurics (CSAMT) over the Dugald River zinc deposit host rocks, as well as gravity and magnetic surveys, were undertaken in the area by CRAE. All the Project deposits subcrop and were initially identified by surface sampling and mapping. The most valuableresult from the geophysical work was the identification aided definition of thecopper-only deposits, the most valuable were the EM and gravity surveys.Gravity lows are registered over the copper-only deposits due to deepweathering, while the metallic copper in the supergene zones were mapped as EManomalies. Airborne magnetic surveys over the Project area are available fromvarious government agencies. Satellite hyperspectral surveys have also been used with some success by various companies in the area.”
“Four copper-gold deposits are scheduled for mining: Little Eva, Lady Clayre, Ivy Ann, and Bedford (which contains two separate zones, Bedford North, and South).
Little Eva, the largest copper deposit within theProject, is considered an IOCG type, and is a close analogue of the ErnestHenry deposit. The deposit contains gold, which has a strong correlation withcopper, and is recovered in the copper concentrate. The deposit is hosted by alarge body of faulted, porphyritic, and amygdaloidal intermediate rock, whichlikely represents volcanic flows, and possibly sub-volcanic intrusive rocks.All rocks display pervasive sodium and potassium feldspar, hematite, and magnetite-bearingmetasomatic alteration assemblages. The mineralization is structurallycontrolled within breccia and veinlet stockworks. Chalcopyrite is the dominantcopper mineral. Mineralization is generally coarse-grained, and readily recovered through flotation concentration. “
Development timeline for EVA: next year they decide.....
Hence, RNX are using the right Geophysics exploration tools any good explorer should use to find a big copper resource in the Cloncurry region!!!!!
Reference:
NI 43-101 TECHNICAL REPORT FOR THE EVA COPPER PROJECT—FEASIBILITY STUDY UPDATE, May 2020.
https://minedocs.com/20/Eva_Feasibility_Study_1312020.pdf
Eva Copper Mine Project Update, 8th May 2024
Just reading up on the exploration activities applied at Eva...
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