The Slovakia-based Dobsina project has proven more of a boon for European Cobalt (ASX: EUC) with “extensive” nickel, cobalt and copper mineralisation discovered at the Gotthard adit portal during field reconnaissance.
With the assistance of local mining experts, European Cobalt identified the Gotthard adit and was able to access 600m of the historic development for mapping and channel sampling.
According to European Cobalt, historic operations spanned nine levels and ran as deep as 200m.
The company is able to access three levels at present for preliminary exploration activities.
“Gotthard adit is a significant game changer in terms of European Cobalt understanding the nature of mineralisation and previous mining practices across Dobsina,” European Cobalt managing director Rob Jewson said.
“It is clear from initial mapping completed that mining was very selective,” he noted.
When operational, the Gotthard adit was exploited for cobalt, nickel and copper.
However, the adit has not yet undergone modern exploration.
In addition to an upcoming bulk sampling program at the adit, European Cobalt has also scheduled an induced polarisation geophysical survey.
Gotthard mineralisation is around 70m down dip of mineralisation identified within the Joremeny and Langengberg adits at the project.
Underground diamond drilling at the Joremeny adit began in May, with European Cobalt targeting massive copper sulphide mineralisation as well as cobalt-nickel sulphides.
The mineralisation lies within the Zemberg Vein system which stretches 2,200m over strike.
Refurbishment of the Joremeny adit is underway, while the nearby Langengberg adit, which also lies on the Zemberg Vein system, is awaiting approvals before refurbishing activities can start.
Late last year, diamond drill core from a surface program at Joremeny pulled up visible cobalt-nickel sulphide mineralisation.
Channel sampling of the Joremeny returned 1.7m grading 2.10% cobalt and 4.42% nickel, and 1.7m grading 0.63% cobalt and 3.49% nickel.
Mr Jewson said the company was working with local mining experts to target other historic adits that may be accessible at the project without refurbishment.
The market reacted positively to European Cobalt’s news, with the company’s share price soaring almost 14% to A$0.066 in early afternoon trade.