Rumble Resources Ltd (ASX: RTR) has commenced an aircore drilling campaign at the Munarra Gully Cu-Au-Co Project in the Murchison Goldfields region on Western Australia.
The drilling programme, which is expected to take two weeks, is following up recent reconnaissance air core drilling which highlighted significant shallow lateral cobalt (Co-Pt) mineralisation.
The company says the cobalt mineralisation is associated with a strongly lateritised pyroxenite intrusive under 5m of cover – indicating high potential for high-grade laterite cobalt deposits under shallow cover.
Intercepts from that programme included 3m @ 0.37% Co, 75 ppb Pt from 14m;2m @ 0.48% Co, 220 ppb Pt from 18m; 2m @ 0.20% Co, 203 ppb Pt from 11m; and 1m @ 0.55% Co, 382 ppb Pt from 13m.
Additional airborne magnetics and surface geochemistry completed by Rumble has outlined up to 10km strike of prospective ultramafic rocks that may host further cobalt mineralisation.
The company is now aiming to test continuity of cobalt mineralisation over approximately 4km. The drilling will extend out from the known laterite cobalt mineralisation at the Co Prospect.
Munarra Gully project is located some 50km NNE of the town of Cue and Rumble is earning 80% in licences M51/122 and E51/1677 and owns 100% of ELA51/1919 and ELA51/1927.
The company says ongoing interpretation and evaluation has identified a regional structural zone as the main control for significant copper, gold and cobalt mineralisation within the Munarra Gully Project, with the mineralised structure is interpreted to extend over 34 km.