Namibia Rare Earths Inc. has announced that it has received further positive results from analyses of 3,710 archived soil samples on the Kunene Cobalt-Copper Project in northern Namibia.
These results augment previously announced results over the western half of the project area which supported kilometer-scale cobalt anomalies identified from a historic regional geochemical survey. These additional results support similar large-scale cobalt anomalies in the eastern half of the project area.
Sample preparation and analyses were carried out by Activation Laboratories Ltd that is based in Windhoek, Namibia and Ancaster, Ontario, Canada.
Namibia Rare Earths is focused on the accelerated development of the Lofdal Rare Earths Project and on building a critical metals portfolio in Namibia.
The project area comprises a mixture of rugged and covered terrain and a detailed combined electromagnetic (“EM”) and magnetic airborne survey is being planned to assist in drill target prioritization. The objectives of the airborne EM survey will be to refine geological and structural mapping, to delineate conductive sedimentary horizons, to isolate conductive bodies that may be indicative of near surface mineral deposits, and to detect sulphide deposits and stockworks at depth.
Mineralisation at Kunene project area 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 mineralization.
Namibia Rare Earths is conducting systematic exploration over an area of 2,142 km2 west of the newly discovered stratabound Co-Cu discovery of Celsius Resources at Opuwo.
Three target areas for cobalt were defined on the Namibia Rare Earths ground within a 670 km2 portion of the project area, based on results from soil geochemical surveys by previous workers exploring for copper in 2014 at a regional-scale sample spacing of 1 kilometer.
Samples from those surveys were analysed by ICP, which is an acceptable analytical method for cobalt. Subsequent, more detailed sampling along selected lines at a spacing of 100 m utilized handheld XRF data, which provided reliable data for copper and other metals but was not reliable for cobalt. NRE is systematically re-analysing this archived database of over 12,000 soil samples to obtain reliable data on cobalt. The regional anomalies are being supported by these repeat analyses of archived samples using ICP analytical methods for cobalt.
Regional Cobalt Anomalies Confirmed in the Eastern Half
New results show a number of discrete broad anomalies of 0.5-1 kilometer extent on surveyed lines south of the Okanihova lineament, and two lower level anomalies of 4–5 kilometers in length parallel to the Steilrand lineament. Isolated low-level cobalt anomalies occur along or proximal to, the interpreted Eastern Extension of the DOF horizon which has been shown to be mineralized on the adjacent ground being explored by Celsius Resources.
Comparison of the regional survey results at 1 kilometer spacing with the more detailed results obtained by Namibia Rare Earths over the eastern half of the project area are shown in Figure 2. As previously announced, the Western Targets area anomalies extend over strike lengths of up to 7 kilometers in basement rocks (high grade metamorphic gneisses and amphibolites) proximal to thrust contacts with younger sedimentary rocks, and for over 1-3 kilometers in favourable sedimentary horizons (black shales and dolostones). Basement-related anomalies can be quite broad, up to 2 kilometers wide, and are related to large-scale alteration systems. Cobalt anomalies are lower level in sedimentary horizons and more restricted which is consistent with the exploration model developed for the stratabound Dolostone Ore Formation Co-Cu targets which may be only 5-10 m in thickness and occur in black shales and dolostone horizons.