Auroch Minerals Limited has recently completed the acquisition of 100% of the tenements known as Bonaventura Zinc Project (Bonaventura Project) located in the world-class base-metal mining region of South Australia. The project focus is on the Sedimentary exhalative (Sedex) mineralisation for which the region is renown.
The Arden Project and Bonaventura Project in South Australia comprise a substantial zinc, lead and copper play supported by excellent infrastructure. The projects cover several historical mines and provide multiple drill-ready targets for large scale base-metal mineralisation that will continue to be systematically evaluated in 2018.
The Bonaventura Project comprises a large exploration licence (EL) of 234km2 in the northern part of Kangaroo Island. The project area has been previously cleared for grazing, and the infrastructure and access are good.
The Bonaventura Project is in similar geological settings to Terramin Australia Limited’s Angas Zinc Mine (Remaining Mineral Resources: 1.29Mt @ 5.75% Zn & Pb) and Hillgrove Resources Limited’s Kanmantoo Copper Mine (34.5Mt @ 0.6% Cu & 0.1g/t Au).
Several targets have been historically drill-tested, with the best intersections coming from the Bonaventura target from drill-hole BVRC03 (16m @ 3.4% Zn and 0.7% Pb from 52m (including 6m @ 6.3% Zn)) and drill-hole BVDD004 (11m @ 3.1% Zn and 1.5% Pb from 26m (including 1m @ 8.0% Zn)).
Reconnaissance rock-chip sampling at the Bonaventura Base-metals Project has confirmed high-grade zinc (plus lead, copper and silver) mineralisation at the Grainger Target with sample grades as high as:
• 28.00% Zn, 1.44% Pb, 0.22% Cu and 19.5g/t Ag; and
• 6.72% Zn, 2.17% Pb, 0.89% Cu and 30.6g/t Ag
Further reconnaissance sampling of waste dump material from historic artisanal mine workings at the Kohinoor Gold Target in the southeast of the Bonaventura Project tenure also confirmed high-grade gold mineralisation with grades as high as 33.3 g/t Au.
Recent reinterpretation of historical has been completed and a total of 17 target areas have been identified by SGC from the reinterpretation of high-resolution aeromagnetic, radiometric, gravity and induced polarisation (IP) data. Geophysical data is coincident with high-grade target areas identified from Auroch’s ground reconnaissance and will assist in the definition of drill targets for zinc, lead, copper and gold mineralisation. A new IP survey has been planned for 3 high-priority target areas to commence in June. Access and permitting processes for the maiden drill programme are well-advanced.