The Yamarna exploration area includes the Mt Venn and Eastern Mafic prospects. It comprises seven granted exploration licences, one granted prospecting licence and two applications for an exploration and a prospecting licence with a total area of 370km².
The Yamarna area and more specifically the Mt Venn Cu-Ni-Co deposit has been the primary focus of exploration by Cosmo to date. Drilling has defined a continuous zone of Cu-Ni mineralisation up to 2.5km in length to a maximum depth of 240m, however this extends over a known strike length in excess of 8km highlighting the potential for the discovery of large-scale deposits.
Already defined over a 2.5km strike length, the Mt Venn deposit shows the potential to form a large-scale resource base, particularly within the northern extension which has been subject to limited exploration and has returned significant intercepts which are yet to be followed up.
Mt Venn is the most advanced target, with significant potential for extensions to known mineralisation along strike and at depth in addition to other conductors in the area which are as yet untested.
The Eastern Mafic deposit, located 7km east of Mt Venn, was discovered in 2018 with the identification of a large 4.5km by 3.5km gravity anomaly and contains polymetallic mineralisation including Cu, Ni, Co and PGE’s.
Limited exploration has been completed at Eastern Mafic to date and several near-surface intrusive related prospects have been identified which remain open along strike. With numerous near-surface drill ready EM and off-hole DHEM conductors identified, Eastern Mafic remains under-explored with significant potential for additional discoveries, exploration upside and the potential for the discovery of a large mineralised system.