Redstone Resources Limited (ASX: RDS) has confirmed significant high grade copper mineralisation in geochemical assay results reported from the hh‐pXRF analysis of the recent reverse circulation (RC) drilling on the company’s 100% owned West Musgrave Project in Western Australia.
In particular, the mineralisation in RC drill hole TLC181 was thicker than expected with assays showing a single 34m interval grading 1.07% Cu from only 15m depth downhole.
In November 2021, three reverse circulation (RC) drillholes, TLC180, TLC181 and TLC182, for a total of 373m, were drilled at Forio Prospect at the Tollu Copper Vein deposit to test for short scale extension and to gain a better spatial understanding of the vein hosted copper mineralisation so far intersected in previous drilling.
In particular, the shallow high grade copper mineralisation intersected previously in the central part of the Forio Prospect was tested for extension to the north and near surface oxide copper mineralisation was tested on a separate vein to the west of that intersected in 2019.
Geochemical assays recently returned from the laboratory have confirmed that RC drill hole TLC181 has extended the shallow high-grade copper mineralisation previously intersected in the centre of the Forio copper vein system for some 12m to the north.
The copper intersection is thicker than expected according to the previous hh‐pXRF analyses, with laboratory geochemistry confirming: 34m at 1.07% Cu from only 15m downhole including: 1m at 3.26% Cu from 19m downhole; 1m at 2.48% Cu from 28m downhole;1m at 1.99% Cu from 35m downhole; and 1m at 2.52% from 40m downhole
The previous historical intersection to the south intersected 16m at 2.8% Cu from 27m downhole and 11m at 1.9% Cu from 58m downhole in drill hole TLC153.
RC drillhole TLC182 was drilled to test for further oxide copper mineralisation close to the surface at Forio and on a different vein set to where oxide copper was intersected close to the surface in 2019 in RC drill hole TLC173, which intersected 11m at 1.4% Cu downhole.
Geochemical assay results show TLC182 successfully intersected 10m at 0.31% Cu from only 1m downhole some 26m to the west of TLC173.
One of the most northern intersections of copper mineralisation along the Forio vein system, 6m at 1.1% Cu from 58m downhole in RC drill hole TLC148 was tested for vertical extension (15m vertical) by TLC180. Geochemical assay results show that the quartz vein had expanded to 10m thick (downhole) and copper mineralisation had reduced to 10m at 0.19% Cu from 73m downhole.
The geochemical assay results confirm that high grade copper mineralisation at Forio may be contained within lenses or ‘chutes’ that plunge to depth at an angle towards a southerly direction, within the thick and seemingly deep quartz veins associated with the Forio Prospect.
TLC182 has highlighted that there may be significant oxide copper mineralisation within metres of the surface at Forio.
Further evaluation of the Tollu Cu Project, which includes the Forio prospect, surrounding Target Areas and the broader West Musgrave Project, has the potential to add to the company’s Tollu copper resource of 3.8 million tonnes at 1% Cu, containing 38,000 tonnes of copper.
For further information please visit: http://www.redstone.com.au/
