Tsodilo Resources (TSD-V) updates Botswana exploration programs July through October 2013
Nov 26, 2013 - News Release
Copper (Cu) exploration drilling conducted by the Company's joint venture partner First Quantum Minerals (FM-T) started during the period, including both deep diamond core drilling (DD) and reverse circulation (RC) drilling.
A major airborne survey collecting electromagnetic (AEM), magnetic, and radiometric data (for radioactive minerals exploration) was initiated by FQM and completed during the period using Spectrem Air Ltd. ("Spectrem"), the data is currently being analyzed.
The high resolution ground magnetic survey continued during the period, covering 983 line kilometers (over 57 km2).
First Quantum Minerals (FM-T)
Copper (Cu) exploration drilling conducted by the Company's joint venture partner First Quantum Minerals (FQM) started during the period. Two phases of drilling were initiated. Firstly a line of deep holes across the strike of the general geology have been planned using diamond core drilling (DD) to develop a geological model at greater depths. Two holes were completed in the 3rd Quarter to an accumulative depth of 851m. Secondly, FQM has started a Reverse Circulation drilling (RC) program on a 2 km grid over the Company's PL386/2008, PL387/2008 and PL388/2008 license areas, to sample the Kalahari Group sediments but specifically to geochemically sample the interface between the weathered bedrock and the overlying Kalahari cover sediments.
Geophysics
A high resolution ground magnetic survey using the company's own Cesium Vapor and Proton Precession magnetometers continued during the period, covering 983 line kilometers over 57 km2. The general strike of the iron formation is north-south; therefore lines were designed to run perpendicular to this body in the east-west direction. A line spacing of 50 meters and station spacing equivalent to one reading every 5 seconds (~ 5-6 meters) was employed to better cover some of the thinner magnetite units, averaging 100 meters in width. All data corrections which include despiking, destriping, diurnal, and tie-line leveling were performed using Geosoft software. Minimum curvature and bi-directional gridding, in conjunction with various filters and transforms, i.e. derivatives, continuations, reduction to pole, analytical signal etc. were performed to produce maps and profiles for visual and modeling purposes, see interpreted XIF from vertical derivatives in Figure 2.
Magnetic data, drillhole Geodomains, susceptibility and assay data were integrated in Geosoft Target software to produce geologic sections. These were used to plan future holes and importantly for cross sectional interpretations as a precursor to geological modelling
A major airborne electromagnetic survey (AEM), covering licenses PL386/2008 to PL395/2008 and PL093/2012 to PL097/2012, was initiated by FQM. Spectrem Air Ltd. ("Spectrem"), a wholly owned subsidiary of Anglo Operations Ltd, was contracted to conduct the survey. Spectrem using the SPECTRUM2000 fixed wing system, a highly successful proprietary airborne electromagnetic technique used to detect conductive horizons. At the same time airborne magnetic and radiometric data was collected by the same system. This regional electromagnetic survey over the broader Gcwihaba area was flown on flight lines 1000m apart maintaining an elevation of some 70 meters. A more detailed survey over the XIF was flown at 200 meter line spacing at the same elevation. Towards the end of the period the detailed survey was completed and 2,538 line kilometers were flown. The regional survey was completed in October and for both surveys a total of 16,932 line kilometers was flown. The data is currently being analyzed. |
