Diamond drilling at Northern Cobalt’s (ASX: N27) flagship Stanton deposit, part of the Wollogorang project in the Northern Territory, has pulled up “exceptional” thick high-grade cobalt intercepts.
Diamond drill core from the 10-hole 774m campaign returned intersections up to 25.4m wide and 2.51% cobalt.
Notable intercepts from the diamond drilling program were 25.4m grading 0.24% cobalt, 20.8m grading 0.31% cobalt, 13m grading 0.33% cobalt and a 1m interval which contained the high-grade 2.51% cobalt.
The diamond drilling campaign was completed in December last year to collect samples for further metallurgical testing and resource calculation.
According to Northern Cobalt, the results support those received from the broader reverse circulation drilling campaign that was undertaken in the latter half of last year.
The diamond drill results also confirm mineralisation is close to surface and Northern Cobalt anticipates it is amenable to lower cost open pit production.
Samples from the diamond drilling program have been selected and will be shipped to Germany for further metallurgical analysis.
Northern Cobalt claims the diamond drill intersection have offered up “valuable information” on the style of mineralisation, geology and structure at Stanton, which will aid the company in targeting new cobalt deposits across Wollogorang.
Stanton cobalt resource
Last month, Northern Cobalt announced a 41% increase to its contained cobalt at Stanton.
The resource upgrade boosted contained cobalt from 850 tonnes to 1,200t at the deposit, with the current resource now sitting at 942t grading 0.13% cobalt, 0.06% nickel and 0.12% copper.
Northern Cobalt has also noted the cobalt mineralisation is primarily cobalt sulphide and non-refractory – making it even more amenable to lower cost operations.
The company is focused on fast-tracking the project, which covers more than 4,986 square kilometres in granted exploration licences.
Stanton is situated in the middle of the company’s landholding which stretches throughout the NT’s top end in the east and hugs the Queensland border.
Further exploration will involve a Toyota air core rig, which can cover a lot more ground faster. The upcoming air core rig drilling program will test mineralisation to 40m depths and to assist the company in rapidly gauging cobalt grades, a customised pXRF will be used on site.
The pXRF will enable Northern Cobalt to obtain readings in less than a day compared to the six-week turn around period for sending samples off for analysis.