CASTILE RESOURCES Rover 1 and regional exploration
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→ Rover Field Exploration
Explorer 108 is a polymetallic Zn-Pb-Ag discovery with a separate copper blanket, 35 km west of Rover 1. Explorer 142 is a compact, high-grade Cu-Au IOCG. Together they broaden the Rover Project from a single deposit into a wider mineral field opportunity.
Explorer 108
Zn-Pb-Ag resource
Headline grade
Indicated, 0.36% Cu
Geological model
Castile's working model for Explorer 108 is a Mt Isa analogue, given the numerous geochemical and structural similarities between the two systems. The primary copper system is yet to be defined.
A review of previously captured downhole electromagnetic surveys identified two subtle but significant off-hole conductive anomalies — to be re-surveyed using modern equipment for vectoring and drill testing.
Project role
Drilling has defined an initial polymetallic resource of 11.8 Mt at 3.24% Zn, 2.00% Pb and 11.1 g/t Ag. A separate Indicated copper resource of 5.7 Mt at 0.36% Cu sits as a blanket above the polymetallic deposit, with further untested geophysical targets still to drill.
Explorer 142
Inferred resource
Above 2.5% Cu cut-off
Plus 1.2 koz Au
Deposit type
Explorer 142 is a Tennant Creek style IOCG deposit with an Inferred Mineral Resource of 170 kt at 0.21 g/t Au and 5.2% Cu — 1.2 koz gold and 9.2 kt copper, reported above a 2.5% Cu cut-off.
Project role
Explorer 142 adds further copper-gold optionality to the Rover Project and supports the broader picture of multiple mineralised deposits across the field, alongside Rover 1 and Explorer 108.