Feature image credit: Wikimedia

Namibia Rare Earths has contracted SkyTEM Surveys ApS to carry out a detailed airborne electromagnetic and magnetic survey covering all the previously identified cobalt targets on its Kunene cobalt-copper project in northern Namibia.

The survey will cover over 600 km2 and comprises 3,700 line km to be flown with a helicopter-borne time domain electromagnetic system at a flight line spacing of 200 meters.

The objectives of the survey are to detect conductive horizons and sulphide accumulations associated with cobalt-copper mineralisation to depths of 300-400 meters, and to assist with geological mapping and structural interpretations.

The system is being mobilized from Denmark and the survey is scheduled to be completed by June 30 2018.

Preliminary data will be delivered on site to allow for immediate ground follow-up by field teams which are being deployed in advance to carry out geological mapping and sampling over the primary target areas.

Namibia Rare Earths is moving forward with an ambitious exploration programme at the Kunene project comprising:

  • Detailed geological mapping and sampling (April-June);
  • SkyTEM electromagnetic and magnetic airborne survey (May-June);
  • Geophysical interpretations and ground follow-up to prioritise drill targets (June-July); and
  • 7,500 m drill programme to commence in July

“We are in the early stages of exploration of what may well be an emerging cobalt district,” comments Namibia Rare Earths president, Don Burton.

“As global attention focuses on diversification of cobalt supply outside of the DRC and on where to secure conflict-free sources of cobalt, Namibia clearly offers the opportunity for the discovery of world class primary cobalt deposits.

“This phase of our programme at Kunene is all about discovery.

“Having closed our CD $4M financing, we are well-funded to carry out the necessary exploration programmes.

“Our SkyTEM survey will be the first airborne EM survey over this highly prospective area.

“Sediment-hosted cobalt-copper deposits should respond well to electromagnetic methods. Based on what the surface geochemistry is showing us, the SkyTEM survey will undoubtedly deliver multiple targets for the budgeted drilling campaign,” he continues.

Exploration at Kunene is driven by the discovery of stratabound cobalt-copper mineralisation as exemplified by the Dolostone Ore Formation (“DOF”).

The DOF hosts a maiden JORC compliant resource at Opuwo as announced by Celsius Resources on 16 April 2018.

Note that JORC reporting totals Indicated + Inferred resources. The Mineral Resource estimate at a cut-off grade of 0.06% cobalt consists of:

  • 72.0 million tonnes at a grade of 0.11% cobalt, 0.42% copper and 0.41% zinc in the Indicated category, and a further
  • 40.5 million tonnes at a grade of 0.12% cobalt, 0.41% copper and 0.46% zinc in the Inferred category.

It is noted that the mineralisation on the Celsius property may not be indicative of mineralisation that may be found on the Kunene project area held by Namibia Rare Earths.

Exploration programme for Kunene

Mineralisation at Kunene is widespread and variable in style, occurring in discrete sedimentary horizons such as the DOF where Co-Cu is associated with disseminations and veinlets of sulphide minerals, orogenic copper and stratabound Zn-Pb mineralisation.

The DOF has been traced for over 35 kilometers across the Celsius ground and is interpreted to continue for another 40 kilometers across the Kunene project area.

Three target areas for cobalt were defined on the basis of an historic regional soil geochemical survey – namely the DOF Extension, the Western Targets and the Okanihova Targets.

As previously announced Namibia Rare Earths received positive results from analyses of 3,710 archived soil samples over a 670 km2 area which support a number of kilometer-scale cobalt anomalies identified from the historic regional geochemical survey.

The company is moving forward with an ambitious, staged exploration programme at Kunene.

Field teams are currently conducting geological mapping and sampling over regional target areas and the SkyTEM survey will be flown through much of June.

Geophysical interpretations and ground follow-up will be on-going as the airborne survey progresses to prioritise drill targets with the objective of beginning an initial 7,500 m drill programme in July.