Legacy Minerals identifies copper-gold anomalies in first-pass sampling at Rockley project
Legacy Minerals managing director Christopher Byrne says the assays provide further encouragement of Rockley’s potential to host copper and gold minerals.
Results returned from first pass sampling at the Rockley project in New South Wales have identified significant copper-gold anomalies for owner Legacy Minerals (ASX: LGM).
The company reported anomalous copper and gold values associated with quartz veined and brecciated Ordovician mafic-ultramafic rocks from 40 samples across 3 square kilometres at the Crystal Hill target.
Significant assays were 1.20% copper, 0.20 grams per tonne gold, 21.3g/t silver and 8 parts per million bismuth; 0.50% copper, 60ppb gold, 10ppm molybdenum, 9.7ppm silver, 394ppm lead and 479ppm arsenic; 0.24% copper, 0.25g/t gold, 69.3g/t silver, 1,710ppm antimony and 201ppm arsenic; and 0.40g/t gold, 801ppm copper, 4ppm bismuth and 40ppm lithium.
They build on limited historical sampling which returned a best result of 4.26% copper, 90g/t silver, 0.1g/t gold, 2,100ppm arsenic and 5ppm molybdenum.
The results confirm widespread oxide copper mineralisation including anomalous porphyry pathfinder elements.
They support the belief that Rockley has the potential to host significant copper-gold mineralisation similar to the nearby Racecourse porphyry copper deposit owned by UK-listed Xtract Resources.
Step in the right direction
Legacy managing director Christopher Byrne said the sampling was a step in the right direction after years of limited to no exploration at Rockley.
“Our ground has had very limited exploration for porphyry-related copper-gold systems and further encouragement for the potential of this area,” he said.
“Incredibly there has not been a single drill hole deeper than 14m at our main target we plan to be the first company to truly test this area thoroughly.”
Legacy’s work indicates a major copper-gold mineralised source may be present at Rockley, where there has been no previous drilling, systematic geochemical sampling or detailed geophysical surveying.
“Importantly, the presence of epithermal-style quartz replacement of bladed carbonate may suggest that high levels of a hydrothermal system are preserved and there is potential for preserved porphyry mineralisation at depth,” Mr Byrne said.
Legacy plans to systematically explore the Rockley project area with an airborne magnetic and radiometric survey later this month; and a large-scale soil geochemistry program in May.