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Cassini Resources drilling confirms Yarawindah is part of emerging New Norcia nickel sulphide province

The project is prospective for nickel, copper, cobalt and platinum group elements, namely palladium and platinum.

Cassini Resources Ltd - Cassini Resources drilling at Yarawindah Project confirms emerging New Norcia nickel province
The project area is extensively covered by cultivated farmland

Cassini Resources Ltd's (ASX:CZI) final results from maiden diamond drilling have returned further strong nickel and copper results at Yarawindah Brook project near New Norcia in WA.

The results have identified a third nickel-copper-PGE sulphide prospect which has been named Ovis and provide evidence that Yarrawindah is part of the emerging nickel-copper-PGE New Norcia Nickel Sulphide Province.

Assays have been received for Ovis, which is around 400 metres east of Avena prospect where encouraging mineralisation was recently encountered, including 0.12-metre at 5.97% nickel, 0.75% copper, 0.39% cobalt and 2.66 g/t platinum group elements from 84.3 metres.

The Ovis prospect adds a third dimension to the Yarawindah Brook project, with nine diamond holes completed for 1,148 metres returning results of:

  • 2.25 metres at 1.09% nickel, 0.99% copper, 0.08% cobalt and 0.24 g/t platinum group elements from 84.8 metres, and
  • 0.9-metre at 1.44% nickel, 0.76% copper, 0.11% cobalt and 0.19 g/t platinum group elements from 86.5 metres.

To date, exploration at Yarawindah has been unaffected by travel restrictions in Western Australia and Cassini expects to be able to advance its exploration programs over the coming months, whilst adhering to the required COVID-19 health protocols.

Emerging New Norcia province

The New Norcia region around 100 kilometres northeast of Perth is deeply weathered, with little fresh rock outcrop and extensively covered by cultivated farmland, which has impeded previous exploration.

Cassini has demonstrated that there is a significant opportunity in the New Norcia region to apply modern exploration concepts and techniques to identify near-surface, nickel-copper-platinum group element (PGE) sulphide mineralisation.

The company believes the potential of the region has already been demonstrated by Chalice Gold Mines Limited's (ASX:CHN) (OTCMKTS:CGMLF) recent high-grade discovery at the Julimar prospect, which is around 40 kilometres south of Yarawindah and within the same mafic/ultramafic intrusive complex.

Several new tenements have been added to the Yarrawindah project, taking the total land holding to almost 400 square kilometres.

These tenements extend over the prospective mafic-ultramafic geology and key mineralisation controlling structures, meaning Cassini now has a significant ground position in an emerging nickel sulphide province.

Historical data use

A review of historical drilling has highlighted the lack of effective exploration for nickel-copper sulphide mineralisation.

Of the circa 840 holes drilled in the project area, only 8% were drilled beyond a depth of 50 metres and assayed for nickel and copper and the remainder of the drill holes targeted near-surface palladium and platinum oxide mineralisation.

The historical database provides Cassini with an opportunity to efficiently identify and test the most prospective areas within the project, which have not been subjected to modern and/or effective exploration.

This historical data has also proven valuable in refining geological and targeting models.

Regional map of the New Norcia Nickel Province with known nickel-copper-PGE prospects, interpreted mafic/ultramafic intrusions and key structures

New exploration targets

The company has further progressed geological and structural interpretation over the broader project area, which has identified additional targets and nickel-copper sulphide prospects over an area of 3 kilometres x 4 kilometres within the central part of the project.

Follow-up targeting work will integrate results from the geological interpretation and modelling, soil geochemistry and down-hole and surface electromagnetic (EM) survey data.

Step-out exploration

While testing the immediate drill-ready targets during this program, the company has also started a systematic, grass-roots exploration campaign, stepping out from the Brassica, Avena and Ovis prospects.

A soil geochemistry program comprising 1,041 samples has been completed and submitted for analysis in Perth.

Reconnaissance mapping has found that surface disturbance in cultivated paddocks is limited to the top 20 centimetres of soil, which can be easily overcome utilising a hand auger to sample the residual regolith profile.

Soil sample results and interpretation are expected to be completed by the end of May.

Looking forwards

A surface fixed loop EM survey is also underway over an area covering around 2 kilometres x 1.2 kilometres across the central Yarawindah project area.

This includes areas of shallow historical drilling with anomalous nickel, copper and platinum group elements results that have never been followed-up.

The program is expected to be completed by the end of April.

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Cassini Resources identifies third nickel-copper-PGE sulphide prospect at...

Cassini Resources Ltd's (ASX:CZI) Richard Bevan tells Proactive's Andrew Scott results from maiden diamond drilling have returned further strong nickel and copper results at their Yarawindah Brook project near New Norcia in WA. He adds that the results have identified a third...

on 20/4/20

4 min read