Located near the Gulf of Carpentaria in Northwest Queensland, the Paperbark Project covers 75km2 under exploration permit EPM14309. Historically, exploration in the region was focused on the nearby Century Pb-Zn deposit, focusing on stratiform mineralisation within sedimentary rocks. However, intersections of faults with favourable stratigraphy are now also high-priority targets. Techniques including remote sensing, induced polarisation gravity and magnetic surveys are used for precise targeting of Pb-Zn mineralisation at the JB Zone. The source of anomalous copper results at the Grunter North Prospect are yet to be linked to substantial mineralisation at depth. The Company’s plans encompass detailed mapping, geophysical surveys, geochemical sampling and drill-testing.
The Etheridge Project in North Queensland covers 49km2 over four exploration permits: Mount Jack, Durham, Carpentaria, and Pensioner, located in the Georgetown Inlier’s Etheridge Goldfield. Access to the project is via the Gulf Development Road and the Gregory Highway.
Mount Jack and Durham both show potential for high-grade gold mineralisation, with plans to extend known zones using historical data, additional drilling, and geophysical dataset reprocessing.
Carpentaria and Pensioner will focus on compiling historical data, field mapping, geochemical sampling, and reprocessing geophysical datasets to identify and extend mineralised structures.
The Lake Johnston Project comprises exploration licence EL 63/2091, spanning ~63km2 across 31 sub-blocks. Located 105km west of Norseman, it encompasses the vast salt pans of Lake Johnston. Access is primarily via the gravel Hyden–Norseman Road and various tracks along the lake. The project is strategically positioned over the Jimberlana Dyke and segments of the Lake Johnston Greenstone Belt, which host the Emily Ann and Maggie Hays nickel projects to the project’s west.
Previous work suggests the Jimberlana Dyke is prospective for magmatic PGE mineralisation and massive nickel-copper sulphide mineralisation. Recent work in the Lake Johnston Greenstone Belt also indicates the project’s lithium prospectivity.
The Redbeds Project is located northwest of Mount Isa, at the southeast end of the Termite Range Fault and adjacent to True North Copper and Capricorn Copper. The project comprises four granted, continuous exploration licenses covering an area of approximately 980 km2. The area has been held by numerous companies over the last 50 years, searching for a range of deposit types including structurally controlled copper mineralisation similar to Mt Isa, Mt Elliott or Swan, SEDEX-style Pb-Zn analogous to Mt Isa or Century, stratiform and/or sediment hosted Zn-Pb-Ag or replacive vein breccia Cu mineralisation. The vast majority of the work conducted to date has comprised regional stream sediment surveys, rock chip sampling and geological mapping, with limited airborne- and ground-based geophysics or drilling.
Rubix identified the Redbeds Project as potentially prospective for ‘redbed-style’ copper-cobalt mineralisation on the basis of stream-sediment anomalies, especially in the eastern and northern margins of the project. Drilling completed by Sumitomo (2009) just outside the license boundary noted a deep interval of cobalt anomalism in FC08DD013, with the end of the hole ending in 6m @ 512 ppm Co from 224m (to EOH), with accompanying low-tenor copper values. Four drillholes from the same Sumitomo campaign fall within the boundaries of the Redbeds project (FC08RC006A, FC08RC007, FC08RC009 & FC08RC012) with a maximum depth of just 135m, so Rubix considers that the copper-cobalt anomalism remains inadequately tested.