Georgina Basin Phosphate Project
The Georgina Basin Phosphate mineral assets are located in north-west Queensland, approximately 160 km north-west of Mt Isa, on the western edge of the Georgina Basin, which contains significant reserves of phosphate rock and a highly prospective area for phosphate related mineralisation.
Georgina Basin Phosphate mineral assets comprise three granted EPMs and two applications for EPMs that cover a total area of around 727 km2.
|Number||Area (hectare or graticular blocks)|
*EPM18767 Riversleigh Prospect Phosphate Exploration Ingram (2009)
Broken Hill South Ltd held EPM 474 granted on 1st January 1968, prospecting for phosphate, uranium and vanadium. The phosphatic Border Waterhole formation was mapped on aerial photographs at a scale of 1: 16,900 and subsequently drill targets were defined. Extensive rotary-percussion drilling was then conducted.
Queensland Phosphate Limited, a subsidiary of Broken Hill South and later Western Mining Corporation Limited, held the ground in 1967 to 1985 under EPM 903, to explore for extensive rock phosphate deposits such as those found at Phosphate Hill near Duchess, south of Mount Isa. The phosphate prospect “Riversleigh” had 166 vertical rotary-percussion holes drilled into it for a total depth of 3723.4m. Phosphate reserves were estimated at 14.4% P2O5, 3.7% Al2O3, 2.4% Fe2O3 and 0.9% CO2. The resource was calculated using a 10% P2O5 grade cut-off for 0.76m (Rogers, 1986).