Krakatoa Resources Limited (ASX: KTA) has encountered multiple sulphide zones with its exploration RC drilling programme targeting strong electromagnetic (EM) conductors at its wholly owned Mt Clere Project in Western Australia.
The Project lies within the Narryer Gneiss Terrane at the northern edge of the Yilgarn Craton in WA and predominantly contains highly metamorphosed and deformed granites and felsic gneisses along with mafic intrusive bodies and rafts of remnant sedimentary units.
Drilling is ongoing, with the fourth hole recently completed. All holes have encountered significant widths of sulphides. The first three holes were drilled over the Milly Milly EM target anomalies and the fourth hole has just finished at the North Bullbadger area.
The Milly Milly holes revealed significant intervals containing sulphide minerals hosted within both highly metamorphosed amphibolite and BIF, and also disseminated within the surrounding granitic material. Sulphide minerals identified include chalcopyrite (copper sulphide), pyrrhotite (iron sulphide) and pyrite (iron sulphide).
Drill hole MMRC01 at the high conductance (10,000S) Milly Milly electromagnetic anomaly intersected sulphide mineralization zone from 183m downhole. This zone was over 60m thick with the top 30m section reported to have up to 30% sulphides with the lower section having 2%. This coincides well with the modelled EM plate. These intervals were dominated by iron sulphides such as pyrite and pyrrhotite, with minor chalcopyrite.
The distribution of sulphides through the Milly Milly holes are within both the BIF and granite. This indicates the presence of a significant mineral system that has brought in the sulphides and reduced magnetite in the BIF to pyrite. Pyrite is the sulphide mineral in overall highest abundance however low concentrations of pyrrhotite were also widely noted. Discrete intervals of chalcopyrite were observed from initial logging, generally within zones of strong foliation.
“It is exciting to see high concentrations of sulphides within the target system explaining the modelled EM conductors,” CEO, Mark Major, said.
“It is still very early days in the exploration over these electromagnetic anomalies however it is important to keep the market apprised of our progress. The geology of the first holes drilled into the Milly Milly target are still being interpreted as it is imperative that we understand the complex geology as well as the processes for mineralization.
“The presence of sulphides is an exciting initial observation and now we wait with anticipation for the assay results.
“The programme is expected to continue until for another week over other target electromagnetic anomalies.”
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