The company has completed its first diamond drilling program, targeting multiple electromagnetic (EM) conductors identified in airborne and ground EM surveys conducted in 2018.
A total of 9 diamond holes have been completed for 1,148 metres within the same emerging nickel sulphide province as Chalice Gold Mines’ (ASX:CHN) recent high-grade discovery at the Julimar prospect, around 40 kilometres south of Yarawindah.
New extensions of nickel and copper mineralisation
Assay results have been received for drill holes YAD0004 through to YAD0006 at the Avena prospect as well as for YAD0003 at the Brassica prospect.
The Avena prospect is at the southern end of the Yarawindah Intrusion which has been the focus of historical exploration within the project.
This latest drilling campaign has tested new EM conductors at the Brassica Prospect, and extensions of the sulphide mineralisation defined at the Avena Prospect.
Cassini is encouraged by a massive sulphide intersection of 0.12 metres at 5.97% nickel, 0.75% copper, 0.39% cobalt and2.66g/t platinum group elements (PGE) from 84.3 metres in hole YAD0005.
Another notable intersection was returned from hole YAD0006, which intersected 5.05 metres at 0.69% nickel, 1.17% copper and 0.06% cobalt from 57.95 metres.
These intersections range from 50 metres to 72 metres below the surface, well within open-pit mining depths.
Downhole electromagnetic (DHEM) survey has identified new off-hole conductors, which are yet to be fully integrated into our geological interpretation at Avena.
Results support exploration model
At the Brassica prospect, hole YAD0003 intersected a 70-metre zone of metagabbro with thick zones of disseminated and locally semi-massive zones of barren iron sulphides (pyrrhotite) and trace Cu sulphides (chalcopyrite) thus reflecting low tenor Ni and Cu sulphide mineralisation.
The metagabbro sequence is very similar to those along strike at Brassica that returned promising intersections of 1.1 metres at 0.50% nickel, 0.10% copper and 0.08% cobalt from 92.9 metres in hole YAD0002 and 0.7 metres at 0.09% nickel, 1.46% copper and 0.02% cobalt from 71.4 metres in hole YAD0001.
The results to date at both the Avena and Brassica prospects support Cassini’s exploration model that the Yarawindah Project has potential to host multiple nickel-copper magmatic sulphide deposits.
Further results expected
Results from a further three holes (YAD0007 – YAD0009) are expected shortly.
These holes targeted off-hole conductors from historical DHEM and intersected visually encouraging zones of sulphides.
Interpretation of results will continue at the Avena prospect while Cassini broadens its review of historical nickel and copper results that stretch over 3 kilometres of strike to the north.
EM and soil geochemistry survey begins
A surface fixed loop EM survey has begun over an area covering around 2 kilometres by 1.2 kilometres as well as areas of shallow historical drilling with anomalous nickel, copper and platinum group elements (PGE) results.
In addition, a soil geochemistry program has begun targeting potential mineralised intrusions beyond the Yarawindah, Avena and Brassica Prospects.
Around 1,000 samples will be collected in the first phase using a hand auger to obtain sample below cultivated soil.
The results at the project to date have demonstrated mineralisation over a broad area at multiple prospects and validated the company’s regional targeting model.
Future exploration programs will begin to test the regional prospectivity which has had little modern exploration for nickel and copper sulphide mineralisation.
Cassini has expanded its tenure with two new applications, now covering almost square 400 kilometres.