Cassini Resources Ltd (ASX:CZI) continues to add to the prospectively of the Yarawindah Brook Nickel-Copper-Platinum Group Elements (PGE) Project near New Norcia in Western Australia with new target areas identified that have had little to no previous exploration.
The company has also received further encouraging results from recent diamond drilling with semi-massive sulphide zones intersected.
Two drill holes were completed at the Ovis prospect with multiple narrow, massive to semi-massive sulphide zones intersected with peak grades in YAD0010 of 1.96% nickel and up to 1.81 g/t combined PGE within a 35-metre-wide disseminated sulphide zone.
Hole YAD0011 also returned several narrow-mineralised intervals such as 2 metres at 0.69% nickel and 0.51% copper within a broader sulphide-rich zone.
Intrusion “larger than originally interpreted”
Managing director Richard Bevan said: “We’re pleased with the results from our first two drill programs at Yarawindah and we’ve made significant progress in understanding the potential of the region.
“Recent analysis of geophysical data suggests the host intrusion is far larger than originally interpreted and barely explored.
“The recent drill results have shown that we’re in a fertile magmatic nickel-copper environment and that we’ve barely begun to unlock the potential of our tenement package.”
Untested by previous exploration
A more significant development is the latest interpretation and greater understanding of the geology and mineralisation at both prospect and regional scales.
Following a review of company and historical drilling, as well as magnetic and electromagnetic data, Cassini has established that the Yarabrook Hill area represents only a small portion of a much larger mafic-ultramafic intrusion.
Yarabrook Hill has been the focus of exploration as this is where the intrusion outcrops and weathering processes have enriched PGE mineralisation.
Contrary to historical narrow, folded geological models, the intrusion appears to be a flat sheet, at least 330 metres thick, which dips gently easterly from Yarabrook Hill under shallow country rock sequences.
In detail, however, the intrusion shows very complex variations in rock types and chemistry over short distances
Cassini has identified a circular magnetic anomaly, known as Yenart, some 4 kilometres to the east of Ovis, which may represent a near-surface exposure of the same intrusive system.
The company intends to progress exploration on multiple fronts:
- Infill gravity survey to improve anomaly resolution and mapping;
- Extend AEM coverage to the east and south over magnetic and gravity anomalies;
- Extend soil geochemistry coverage over the same area;
- Evaluate untested potential drill targets in the Yarabrook Hill area; and
- Continue to progress land access and environmental approvals for all programs.
There are several historical drill intersections and untested EM conductors on the northern end of Yarabrook Hill that warrant drill follow-up.
Cassini is in the process of gaining land access and other approvals to enable drill testing of these targets.