- Tsodilo Resources Limited ("Tsodilo" or the "Company") (TSX Venture Exchange: TSD) is pleased to announce the discovery of a new kimberlite on its Newdico (Pty) Limited license blocks in Botswana.
Ground magnetic surveys carried out over a "bulls-eye" airborne magnetic anomaly 21181A portray a dipolar and roughly circular body, indicative of pipe-like intrusive body measuring approximately 500 meters north-south and 400 meters east-west (20 hectares) The geophysical magnetic images can be viewed on the Company's website at /s/Imagery.asp
. Drilling commenced on April 24, 2009 and the target was drill tested with the Company's diamond core drill rig.
Target 21181A is located approximately 30 kilometers east of the Namibia - Botswana border in the Company's Newdico license block and approximately 5 kilometers south-west from the small village of Nxau Nxau.
After drilling through 15 meters of loose aeolian sand, a consolidated hard thick section of calcrete was encountered to the base of the Upper Kalahari sequence at 37.5 meters when very weathered, highly altered reddish-brown, friable tuffistic kimberlite breccia with angular, altered country rock xenoliths, including dolomite and mudstones, and highly altered olivine macrocrysts and minor ilmenite was intersected. This can be interpreted as an erosional zone. Numerous coarse kimberlitic ilmenites of up to 5 mm in size were visually identified in this weathered kimberlite up to 89.5 meters depth. From 89.5 meters up to 170 meters the kimberlite was similar to earlier sections but the color changed to grayish green. More olivine macrocrysts were present and fewer larger country rock xenoliths in the deeper sections. The rock encountered is a magmaclastic tuffistic kimberlite breccia consisting of abundant, highly altered olivine macrocrysts and angular country rock xenoliths, including dolomites, dolerites and mudstones, and minor accessory ilmenite and garnet 2.5 mm in size. The matrix consists of altered olivine, carbonates and secondary clay minerals. Photos of the 21181A kimberlite core can be vied on the Company's website at /s/21181A.asp
Technical problems were encountered at 170 meters following the loss of water return and the hole was stopped while still in primary kimberlite.
A more detailed petrological examination and determination of the indicator mineral chemistry by micro-probe analysis will be carried out to determine the diamond bearing capacity of the 21181A kimberlite before further drilling to locate the center of the pipe.
The Company's Botswana licenses are proximal to two major unexplained surface concentrations of diamonds and G10 garnets across the border in Namibia, one near the village of Tsumkwe and another in the area known as Omatako. The characteristics of these kimberlite pathfinder mineral anomalies indicate that they are secondary concentrations derived from respective primary high-grade kimberlite sources located elsewhere. The geomorphological model envisages that the Tsumkwe and Omatako pathfinder anomalies were formed by ancient rivers transporting diamonds and garnets derived from kimberlites located in the Company's license blocks. Prior to the deposition of the superficial Kalahari sand that covers much of Ngamiland, this area formed a topographic high. Rivers rising off this high ground flowed westward into a major inland sea located in the north of present-day Namibia. The Company's diamond targets cover former headwaters of this ancient river system and lie within the southern margin of the Congo craton.
Previous attempts to identify target anomalies outside of the main Nxau Nxau kimberlite field were virtually impossible in the past due to the highly magnetic dolerite dyke swarm which runs through the area. The Company has developed proprietary techniques to compensate for this magnetic interference and the discovery of 21181A is a direct result of this effort. Up to fourteen additional targets identified in the same fashion will be drill tested. A description of these techniques can be viewed on the Company's website at http://www.tsodiloresources.com/i/pdf/GISarticleIMJMB42709.pdf
. "Utilizing these new techniques has allowed us to explore and identify target anomalies in areas that were black holes using traditional exploration techniques. We are very confident that these techniques will lead to further kimberlite discoveries in the near future", states James M. Bruchs, the Company's President and CEO.
Electron microprobe analysis on over 4,000 kimberlite indicator minerals ("KIM") from kimberlites A41, C15, A36, 1821C16, PD07, PD25, B1, B2, B3, B4, B5, B6, B7, B8, B9 and A15 was completed in the first quarter of 2009. The KIM's chemical compositions are being examined to establish their suitability for the purpose of aiding the Company's decision in determining which if any kimberlites in the Nxau Nxau should be examined for macro-diamond. The KIMs were probed at the Africa Earth Observatory Network ("AEON") EarthLab located at the University of Cape Town, South Africa under the direction of Dr. Anton le Roex. The review of the KIM's chemistry is being carried out by Dr. David R. Bell.
The Company has an 94% stake in Newdico (9,400 square kilometers under diamond license) while Trans Hex Group, a South African diamond mining and marketing company, holds the remaining 6%. The southern and northern Gcwihaba project area (4,310 square kilometers under diamond license and 11,400 square kilometers under base and precious metals licenses) is 100% held by the Company. Tsodilo manages the exploration of both the Newdico and Gcwihaba license areas. Overall field project supervision of the Company's exploration program is the responsibility of McDonald Kahari, Pr. Sci. Nat., B.Sc. (Physics and Geology), M.Sc. (Exploration Geophysics), a qualified professional registered with the South African Council for Natural Scientific Professions and a Qualified Person under NI 43-101 and he has reviewed and approved the contents of this release. The Company has offices in Toronto, Canada and Gaborone and Maun, Botswana. Please visit the Company's website, www.TsodiloResources.com
, for additional information and background on our projects.
The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this news release. This news release may contain assumptions, estimates, and other forward-looking statements regarding future events. Such forward-looking statements involve inherent risks and uncertainties and are subject to factors, many of which are beyond the Company's control, which may cause actual results or performance to differ materially from those currently anticipated in such statements.
FOR FURTHER INFORMATION PLEASE CONTACT:
James M. Bruchs - President and Chief Executive Officer
E-Mail - JBruchs@TsodiloResources.com
Head Office - Telephone +1 416 572 2033
Facsimile + 1 416 987 4369