A programme of about 60 holes for 3,000 metres of reverse circulation (RC) drilling is underway to test areas of anomalous uranium-in-soil responses 20 km along strike from the Letlhakane Project.
Impact Minerals’ Botswana uranium project covers 350 km of the strike extensions of rocks that host many significant uranium deposits throughout southern Africa, including Kayelekera in Malawi and Letlhakane in Botswana.
The drill programme is anticipated to finish within a few weeks and assay results are expected in January 2009.
A second drill programme is currently being planned to commence in early 2010, weather permitting, to follow-up other priority uranium targets within Impact Minerals’ Prospecting Licences and to follow-up results from the current drilling programme as appropriate.
Further soil geochemistry programmes are also being planned and will commence as soon as possible in 2010.
Impact Minerals’ Prospecting Licences in Botswana cover 350 km of the strike extensions of rocks that host many significant uranium deposits throughout southern Africa, including Letlhakane.
The large Letlhakane Project is owned by A-Cap Resources Limited which has reported an Indicated and Inferred Resource of 344 Mt at 152 ppm using a 100 ppm cut-off for 116 Mlb of uranium oxide in deposits hosted by near-surface calcrete and by Karoo Group sedimentary rocks.
Impact Minerals’ licences are prospective for three types of uranium deposits: deposits hosted by Karoo sedimentary rocks, which host a number of large uranium deposits throughout southern Africa, including at Letlhakane; uranium hosted by calcrete in Cainozoic palaeochannels, a style of mineralisation well known in Australia and Namibia; and deposits within playa (salt) lakes which, in Australia and elsewhere in Africa, are known to host significant uranium deposits.
Impact Minerals has identified 18 such target areas with a combined strike length of more than 400 km within its licences. These generally comprise elongate regions within which there are variably exposed calcrete outcrops and/or outcrops of prospective Karoo sedimentary rocks. Many have elevated surface uranium responses in the regional airborne radiometric data and in ground spectrometer readings.
The Lekobolo Prospect is one of five priority targets identified by Impact Minerals on the basis of the widespread surface uranium anomalism in calcretes and sandstones, backed by regional mapping, ground reconnaissance work and sampling. These other four priority targets are Lekobolo, Sua, Kodibeleng, Ikongwe and Shoshong.
Impact Minerals’ targets in Botswana have the potential to host very large deposits of uranium mineralisation in a country ranked in first place by the Fraser Institute in its 2009 survey of Mining jurisdictions in Africa.
