The Copper Blow Project is a large mineralised system identified by AML that demonstrates the characteristics of a significant Iron Oxide CopperGold (IOCG) deposit, located 20kms south of Broken Hill. The Project comprises three exploration licences, (EL 8255 Coombarra, EL 8629 Saltbush and EL 8076 Lynor) and is held under a Joint Venture agreement whereby AML maintains a 75% interest and CBH Resources 25%, with both companies contributing.
Geophysical and geochemical surveys carried out by AML indicate the IOCG style of mineralisation has a much larger footprint than initially recognised, with a magnetically anomalous zone 100-200 metres wide extending over 4.5 kilometres. To date, AML has only tested the copper-gold mineralisation over a strike length of 1 kilometre in the southwestern part of the anomaly.
This extensive system has the potential to host large tonnage copper-gold deposits and, will be the focus of the Company’s drilling programmes in 2018-2019.
Copper Blow is in close proximity to the established infrastructure at Broken Hill with power, rail and sealed road all within a few kilometres. The City of Broken Hill has all the facilities of a major mining centre, with two operating mines including CBH’s Rasp Mine.
Results from AML’s exploration to date lends Copper Blow potentially amenable to both open pit and underground resources.
Drilling to Date
AML has carried out 32 drill holes for over 8,400 metres over four rounds of drilling from August 2017 to September 2018. It includes 4,460m of reverse circulation drilling and 4,034m of core drilling.
Drilling shows that copper-gold mineralisation occurs as sulphides within a magnetic ironstone, the Copper Blow Shear zone. Drilling to date has concentrated over a 1 kilometre portion of this magnetic rock located in the southwestern part of the shear zone. The remaining 3.5 kilometres is yet to be tested.
The copper-gold-rich zones drilled by AML have a distinctive elevated trace element geochemistry characterised by elements including molybdenum, silver, rhenium, phosphorous, cobalt, lanthanum, indium,cerium and nickel.
This distinctive geochemistry and the form and nature of the surrounding alteration minerals strongly suggests this mineralisation is of the iron oxide copper-gold (IOCG) type. This style of deposit produces significant quantities of copper and gold worldwide. Deposits range in size from 1 million tonnes of high grade gold ore at Tennent Creek in the Northern Territory to super-giants (+10 billion tonnes) such as Olympic Dam in South Australia which is mined for copper and uranium.
Copper Blow displays geological similarities to several deposits in Australia including Ernest Henry (Qld),Prominent Hill (SA) and Selwyn (Qld).