G11 Resources extends mineralisation at Wilandra with high-grade copper strikes
G11 Resources (ASX: G11) has reported high-grade copper intercepts from reverse circulation drilling at the Wilandra Central target within its wholly-owned Koonenberry project in New South Wales.
The company recently completed a 19-hole program totalling 4,092 metres, with five of the holes drilled at the Peveril prospect.
Best hits were 9m at 2.68% copper from 310m including 6m at 3.46% from 311m, 6m at 1.06% copper from 361m including 3m at 1.83% copper from 363m and 4m at 1.33% copper from 264m including 1m at 3.55% from 265m.
Extended mineralisation
Drilling was designed to test for extensions and continuity to outcropping copper mineralised structures based on a newly-developed geological and mineralisation model.
It extended the mineralisation at Peveril by an additional 140m down-plunge to more than 400m (or 330m below surface).
The program also identified Central Gossan as a mineralised link between the Peveril and Grasmere prospects, extending the defined mineralised strike length to 4 kilometres.
The results are believed to reinforce G11’s interpretation that the copper mineralisation at Wilandra is structurally remobilised from a deeper volcanogenic massive sulphide (VMS) source.
DHEM survey
Nine of the holes were used for a maiden down-hole electromagnetic (DHEM) survey to test for electromagnetic (EM) conductivity associated with VMS mineralisation.
The results were combined with data from a re-modelled moving loop EM survey to define conductance plates close to the surface.
The DHEM work confirmed the high-grade sulphide mineralisation provides a clearly defined EM signature.
This will help G11’s technical team identify additional near-surface, structurally-controlled dilatant zones within the 70km strike extent of the prospective rock sequence that defines the Wilandra Corridor.
Neighbouring targets Rainbow Tank, Basalt Ridge, Cymbric Vale, Black Hills and Big Mother will also be re-modelled with geophysical surveys to define further drill targets.
Focused exploration
Chief executive officer Simon Peters said the drilling results demonstrate the merit of focused exploration at the site.
“Wilandra Central now has a 4km strike extent of mineralised structure which remains open in all directions and includes higher-grade shoots with immediate and substantial mineral resource potential,” he said.
“Significantly, we now have a proven exploration methodology with this round of drilling demonstrating the effectiveness of EM as a targeting tool, which will be immediately rolled out to our other targets within the Wilandra and Cymbic Vale corridors.”
Mr Peters said a 4,000m follow-up drilling program would commence this month, accompanied by further down-hole EM work.