Other Projects in Western Australia
The Ardea WA tenure represents a large strategic land holding in one of Australia’s premier nickel sulphide and gold provinces. Ardea has several additional project mineralisation styles outside of the GNCP geothite. In addition to the other laterite hosted nickel-cobalt opportunities, Ardea’s tenure also hosts significant “greenfields” nickel sulphide and/or gold mineralisation.
Emu Lake nickel prospect
Emu Lake is part of the Kalpini group of tenements and has known nickel sulphide mineralisation exceeding 1% nickel. Previous explorers include Jubilee Mines, Emu Nickel, Xstrata and Pioneer Nickel. The komatiite belt is known to be fertile for nickel sulphide, including extremely high grade (+18% Ni) historic nickel sulphide intercepts (ELD015), albeit thin and discontinuous in previously limited drilling.
Ardea is in the process of assessing historic data from the region and defining and ranking a pipeline of nickel sulphide exploration targets. Detailed exploration programs will be planned and executed over compelling targets during 2020.
Perrinvale nickel sulphide prospect
E29/1006 covers 175km² along the eastern strike continuation of the “Cathedrals” Proterozoic Dyke complex. The application was predicated on Ardea’s recognition of lopolith mineralisation controls at its Bedonia Project, and aims to secure similarly endowed lopolith geological settings, as well as the northern strike continuation of the domain boundary Ida Fault hosting the Mt Ida gold mining centre to the immediate south.
The Ardea exploration model is based on recent nickel sulphide discoveries immediately west of Perrinvale made by St George Mining. Regional magnetic data highlights that the feature which hosts the St George Mining nickel sulphide discoveries within the Cathedrals Belt, has an east-northeast strike and extends into Perrinvale. At Perrinvale, this prospective trend is overlain by transported cover, requiring geophysical methods such as moving loop Electro Magnetic (EM) surveys to be employed to facilitate drill hole targeting.
The first MLEM survey was completed over three separate zones at Perrinvale during the September quarter. A final field report was received during the December quarter which recommends follow-up exploration including shallow aircore drilling beneath transported cover to determine basement geology and whether there is a geochemical signature associated with the EM anomalies defined.
Surface EM surveys are also recommended over the areas not covered by the initial trial survey.
Ardea is yet to follow up on the gold potential on the eastern side of the tenement package that could be associated with the north-south trending Zuleika-Ballard Shear system.
Mulga Plum gold and VMS base metal-sulphur prospect
The Mulga Plum gold prospect is a gold and base metal VMS target located 40km NE of Menzies and immediately SW of the historic gold mining town of Kookynie. The exploration model being tested by Ardea is a bulk tonnage granitoid gold system.
A review of historic data along with detailed mapping and rock chip sampling to confirm and extend historic gold anomalism was used to refine targets for RC drill testing. Drilling commenced on 12 December and before a hiatus for the Christmas break, a total of 20 RC holes for 1,148 metres was completed and 640 samples submitted for multi-element analysis.
Logging of RC drill chips has confirmed widespread disseminated sulphides across several alteration zones (propylitic epidote and potassic biotite dominant) and favourable rock types, including granitoid, mafic and felsic porphyry intrusives. Increased sulphides were also noted within the granite and along the base of mafic units. Assay results are required to help determine the significance of these observations as they relate to gold mineralisation.
A total of five holes for 350 meters remain to be drilled for completion of the program, which is scheduled to recommence in mid-January 2020.
Taurus gold prospect
An internal project assessment has been undertaken and several gold and base metal targets defined. These will be ranked against the other projects within Ardea’s portfolio and followed up during 2020.
Bedonia gold and nickel sulphide
The metallogenic model at Bedonia is nickel sulphide and Platinum Group Metals (PGM) associated with the Proterozoic-aged Jimberlana Dyke, with mineralisation at a historic prospect, Mordicus, as the proof of concept. Field programs by Ardea have identified targets at the Cleanthes and Lila gold prospects (historic drilling up to 2.7g/t Au), located on the Cundeelee Fault at the Albany Fraser Province western boundary.
Soil auger drilling programs have been designed and heritage clearance programs have been sought.