Annual report on EL 26588 Tennant Creek East for the period ending 10 August 2010

Abstract

EL 26588 is located 44km NE Tennant Creek and 40km east of Three Ways immediately south of the Barkly Highway on the TENNANT CREEK 1: 250,000 and BARKLY 1:100,000 map sheets in the Northern Territory. The tenement occurs on the western margin of the Georgina Basin where flat-lying Cambrian sediments have been deposited. The basal part of this sequence, the Gum Ridge Formation, is considered prospective for phosphate mineralization overlying either carbonates or basalts of the Middle Cambrian. Field reconnaissance was carried out to determine the type and extent of outcrop and its pertinence to phosphate mineralization. Geochemical sampling was undertaken for multielement assaying and this work involved the collection of 83 samples of which 47 were submitted. There is a significant soil phosphorus result of 140ppm where geological mapping (Donnellan et al., 1998) indicates the presence of Quaternary sands overlying Gum Ridge Formation. Samples 1000m either side of this sample contain only 50ppm P. High magnetic susceptibility readings recorded at this site suggest basalt of the Helen Springs Volcanics. Some lesser phosphorus values along strike might support this conclusion. RC drilling is recommended to test for favourable lithologies and phosphate content.