At Impact’s Moiyabana Prospect, close to the Morolane and Mosolotsane discoveries, field checking of a 3km by 1km airborne uranium anomaly showed surface uranium anomalies of up to 470ppm eU3O8 within granitic gneiss and migmatite.
These rocks form a basement to the mineralized Karoo and Kalahari sedimentary rocks, which have been the primary focus of Impact’s uranium search in Botswana.
Impact drilled three holes within this anomaly and these returned broad intersects of mineralized granitic gneiss and migmatite including an intercept of 4.2m at 320ppm eU3O8 from 35m down-hole in fresh rock.
Broader, near-surface intercepts include 16m at 115ppm eU3O8 from 2m depth.
Additionally, field checking of a 60km by 30km area between Moiyabana and Kodibeleng has identified many areas, all within Impact’s licences, with widespread uranium anomalies and associated intense mineral alteration in both the granitic basement and in the unconformably overlying conglomerates and sandstones of the Palapye Group.
The basement-hosted drill discovery at Moiyabana and the widespread uranium anomalies and alteration in the Palapye Group rocks have significant implications for uranium discoveries in Botswana by increasing the scope of the search to new types of deposits.
