Galileo Mining Ltd’s (ASX: GAL) massive sulphide assays from the exciting Callisto palladium-platinum-gold-rhodium-copper-nickel discovery in Western Australia has revealed a new style of magmatic nickel-copper-cobalt with potential for high-grade zones within the growing mineralised system.
“The first massive sulphide intersection at Callisto has returned significant nickel-copper-cobalt assays highlighting a new zone of mineralisation above and separate to the lower palladium rich zones,” Managing Director Brad Underwood said.
“This style of metal enrichment demonstrates the potential in the area and the abundance of new results is an extremely positive sign for the prospectivity at both the Callisto discovery and the area immediately to the north where we are currently drilling.
Magmatic sulphide mineralisation containing nickel-copper-cobalt is a rare find and we will undertake down hole EM surveying to look for the source of the intercept. Callisto continues to deliver results and with two rigs on site we expect to quickly develop our understanding of the area and the outstanding opportunities for new discoveries in the region.”
Assays from the diamond core drill tail of NRCD293 contained a zone of massive sulphide from 189.8 metres down hole that is separate and distinct from the lower palladium rich zone (intersected at 240 metres down hole, 2 metres @ 1.67 g/t 3E, 0.09% copper, 0.26% nickel)
The presence of cobalt in the massive sulphide unit, with high grades up to 0.18%, is new for Callisto where cobalt grades in the palladium rich sulphide zone are most often around 0.01%.
The massive sulphide texture, the high grades of cobalt recorded, and the physical separation between the two zones of metal enrichment, all point towards the discovery of a new style of mineralisation at Callisto.
Down hole EM surveying is planned to look for a potential source of the massive sulphide as the massive sulphide unit will provide a much stronger conductive response than the deeper, palladium rich, disseminated sulphides.
Disseminated nickel sulphides have been discovered north of Callisto; massive sulphide discovered above Callisto in NRCD293; and mineralisation continues to extend to the northwest (see Figure 3 and ASX announcement dated 12/10/2022).
All of these newly discovered zones of mineralisation demonstrate the opportunity for growth, through a combination of drilling out the known metal rich sulphide zones, and the potential for new discoveries in the five kilometres of prospective ground to the north.
