The first diamond drill hole TDD0004 intersected 25.89m 3.13g/t Au from a depth of 41.00m, including a number of higher-grade zones 2.90m 4.15g.t Au from 41.60m, 2.00m 12.71g/t from 60m, 3.89m 8.78g/t Au from 63.00m. This southern zone is approximately 150m wide and appears to consist of two main east-west subparallel shaft arrays but with scattered deep vertical shafts between these suggesting a number of probably subparallel mineralised shears.ĭrill holes at Ngula 1 were planned on an initial 100m spacing along strike and targeted to penetrate the projected downdip extent of the artisanal linear features at -50m, -100m and -150m.Īll drill holes were designed to drill to 300m, effectively testing between surface and -200m vertical, and to be drilled from the north and south, a necessity to achieve intersections along both the zones at the desired depths. The southern of the two zones at Ngula 1 was selected as the first drill target and diamond (DDH) and reverse circulation (RC) drilling commenced in December 2011 and the immediate positive results announced in March 2012. The airborne magnetic data interpretation coincides closely with the linear shaft arrays, a key feature assisting in the interpretation of the local geology and controls on mineralisation.
Within the areas of rubble mining revealed by the ortho-photographic imagery and the digital elevation model produced by the LIDAR survey, numerous linear subparallel east-west trending arrays of vertical artisanal shafts to hard rock are clearly evident, and less well-developed northwest and northeast trends. Regolith mapping shows that the area is covered in transported slope scree material that totally conceals all underlying geology and mineralisation, only now revealed through the chance discovery by artisanal workers. LIDAR conducted as a precursor to the drill programme of December 2011, and 2012, revealed extensive workings at Ngula 1 along and adjacent to two east west striking zones.Įxtensive surface workings had exploited a rubble zone over an area of 100-150m by 200-300m along a southern area, and a 100-150m by 150-200m area along a northern area. High resolution airborne magnetics had defined subparallel east west magnetic lineaments and weak northeast trends along interpreted sub-vertical structures. Prior to the drilling programmes conducted during the 2011- exploration campaigns, Ngula 1 had returned two anomalous soil values and five reverse circulation drill holes had been drilled along a close-spaced drill fence to intersect beneath a linear array of shallow artisanal shafts trending northeast.
Historical and Pre-drilling Exploration Results (TSXV: TEM) ("Tembo" or the "Company") is pleased to provide this geological information on the Ngula 1 target, Tembo Project.
Vancouver, British Columbia-(Newsfile Corp.
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