Fifth annual and final report for EL 10358, period ending 23 April 2007

Abstract

The Timber Creek Project is located approximately 370 kilometres SSW of Darwin on the Auvergne 1:100,000 map sheet, over the five known Timber Creek Kimberlites sited approximately 10 kilometers south of the small township of Timber Creek. These kimberlites were discovered by De Beers during a sampling program over this area between 1991 and 1993. The Timber Creek project consists of Exploration Licence (EL10358) covering an area of 6.6 square kilometers over these five known kimberlites. During the current period a large number of additional grain microprobe analysis has completed for previous heavy mineral samples, together with trace element data by laser ICP-MS. A detailed gravity survey and Digital Terrain Model have been completed over the Timber Creek 01 Kimberlite. This gravity data has been modelled by consulting geophysicist confirming that TC01 does have a negative gravity anomaly. Some of the Timber Creek diamonds were taken to Canada and nitrogen concentrations and aggregation states were examined by infrared spectra. During August 2006 at the 16th Annual V.M. Goldschmidt Conference held in Melbourne a talk was presented on the infrared study of Timber Creek diamonds. For completeness, the corresponding abstract for this talk is provided. A number of diamonds from Timber Creek 01 have been crushed and have undergone analyses to determine their carbon isotope signatures. Many of the diamonds were the same ones used in the infrared nitrogen study. This work has been completed and the results have been received from the laboratory in Sydney. A full report has not been completed yet on the specifications used and the final interpretation of the results.