Greenstone Resources Limited Provides an Update on Exploration Activities At the Mt Thirsty Joint Venture in Western Australia
by historical drilling, most recent intercepts include: MTRC011DA: 78.0 metres @ 0.11% Co, 0.50% Ni, 1.38% Mn & 46.4g/t Sc from 3.0 metres, incl: 15.0 metres @ 0.45% Co, 0.91% Ni, 5.42% Mn & 40.9g/t Sc from 45.0 metres; MTRC065D: 45.0 metres @ 0.03% Co, 0.33% Ni, 0.23% Mn & 35.9g/t Sc from 5.0 metres, incl: 8.0 metres @ 0.08% Co, 0.54% Ni, 0.43% Mn & 40.3g/t Sc from 19.0 metres. The most recent drill campaign utilised a combination of both reverse circulation and diamond drilling methods which allowed holes to be extended to an average depth of ~350 metres below surface, significantly deeper than the air-core methods typically utilised at Mt Thirsty in the past. As a result of this shallow air-core drilling, large areas beneath the existing resource still remain untested. Additionally, the current drill campaign employed a comprehensive multi-element assay suite, serving to identify the presence of scandium which had
not previously been assayed for, and is not included within the existing resource estimate. The potential addition of scandium to the existing Co-Ni Mt Thirsty Project. The lower zone consists of a chromium rich basalt hosting a thick zone of continuous nickel mineralisation. Importantly, nickel mineralisation has been intersected in 8 out of 14 holes for which assays have been received, with the most recent results including: MTRC009D: 21.8 metres @ 0.28% Ni & 49.8g/t Sc from 268.2 metres, incl: 7.8 metres @ 0.34% Ni & 57.2g/t Sc from 268.2 metres; MTRC007D: 33.5 metres @ 0.26% Ni & 35.8g/t Sc from 237.5 metres, incl: 11.0 metres @ 0.37% Ni & 49.7g/t Sc from 238.0 metres; MTRC012D: 19.8 metres @ 0.28% Ni & 49.7g/t Sc from 313.2 metres, incl: 8.0 metres @ 0.38% Ni & 49.3g/t Sc from 316.0 metres. The current drilling has defined a continuous nickel horizon with a strike extent of 1,000 metres, across strike of 400 metres and an average thickness of ~15.0 metres. The middle zone consists of an intrusive gabbro sill hosting anomalous palladium-platinum-gold-copper-nickel mineralisation (Callisto style). Importantly, highly anomalous mineralisation has been intersected in all 15 holes for which assays have been received, with the most recent results including: MTRC006D: 9.0 metres @ 0.14g/t 3E, 0.09% Ni & 0.02% Cu from 223.0 metres; MTRC005D: 6.5 metres @ 0.12g/t 3E, 0.09% Ni & 0.02% Cu from 292.0 metres; MTRC012D: 3.0 metres @ 0.10g/t 3E, 0.06% Ni & 0.01% Cu from 247.0 metres. Having intersected both the target horizon and anomalous PGE mineralisation in all holes for which results
have been received, it is likely that secondary structural controls are influencing the spatial distribution of
high-grade Callisto style mineralisation in the region. Based on currently available information, it is believed that regional folding has created structural traps serving to create localised zones of sulphide accumulation. Initial results from the Phase 1 campaign have been instrumental in refining this exploration model, and have been utilised to further constrain the later phases of the Phase I drill campaign to areas which exhibit a similar structural signature as Callisto.