Koolyanobbing Metals Project
- Recent ground EM Survey identifies three late time conductors at the Koolyanobbing Metals Project
Two conductors, VC4 and VC5, lie within an interpreted mafic/ultramafic volcanic sequence in the underexplored Koolyanobbing Greenstone Belt
The third conductor, Island Gossan Conductor lies within a felsic volcanic unit, in a sequence of banded iron and metamorphosed mafic rocks.
Each of the three conductors demonstrate all the consulting geophysicist's target ranking criteria for high priority drill targets
ASQ considers the targets prospective for gold, nickel, and copper
Drill testing planned immediately following environmental approval and heritage clearances
ASQ established the Koolyannobbing Metals Project, (KMP) in 2022 following the completion of the aquisition of ground in the region.
In 2022 the company carried out ground based fixed loop electromagnetics (FLEM) surveys at the KMP and the survey generated three high-priority bedrock conductors.
GEM Geophysics Pty Ltd completed FLEM surveying during December 2022 and January 2023 with supervision and interpretation by ASQ's geophysics consultant Newexco Exploration Pty Ltd.
Fig 1: KMP Tenement locations and status with the identified FLEM late-time conductor positions
Figure 2: Identified Island Gossan, VC4 & VC5 FLEM late-time conductors
Exploration by Noranda Australia Ltd ('Noranda') in 1980 identified the target "Island Gossan", consisting of an area of outcropping gossan developed within an interlayered sequence of felsic tuff, clastic sediments, chert and banded iron formation on an island within the Lake Seabrook salt lake (See Figure 1 and 2). The gossanous horizon was mapped by Noranda over a strike length of 400m, with widths up to 5m. Pyrite, pyrrhotite and oxidised chalcopyrite were observed. Values up to 1150ppm Cu and 0.04ppm Au were recorded from rock chip sampling. Ground magnetics confirmed the continuity of the gossanous horizon under the Lake Seabrook salt pan to the south. Although planned, drill testing was never completed.
The ASQ Island Gossan FLEM survey consisted of two lines (Local Grid: 32350 and 32450) and loop 22LSL7 designed to explore the interpreted gossanous horizon for bedrock conductors. A well-defined late-time anomaly was identified across both lines. The late-time anomaly is clearly separate from an identified mid- time response interpreted to be attributable to the conductive sediment layers of the salt lake.
The Island Gossan conductor plate has a modelled conductance of 6400S, a length of 150m and a depth extent of 227m (See Figure 3).
Figure 3: Modelled Island Gossan FLEM conductor plate (red) with loop 22LSL7 (blue) and Bz profiles of channels 30-34 (white lines)