GWR holds a 100% interest in the Hatches Creek Tungsten Project, an advanced stage tungsten project located in the Northern Territory of Australia covering the large high grade historical Hatches Creek mining centre.
The Hatches Creek project consists of two granted tenements occupying 34 km2 (EL22912 and EL23462), which cover the entire historic Hatches Creek tungsten mining centre. Hatches Creek is a large historical high grade tungsten mining centre where mining was undertaken between 1915 and 1957. Previous recorded production is approximately 2,840 tonnes of 65% WO3.
The Project is located 375 km north east of Alice Springs in the Northern Territory of Australia (Figure 1).
Figure 1, Hatches Creek Project Location
Work by previous owners Arunta Resources Limited was focused on the historical mine stockpiles. In September, 2014, Arunta announced a maiden Inferred Resource of 225,000 tonnes grading 0.58% WO3 (0.2% lower cut off and 1.5% upper cut).
Results from metallurgical test work have successfully produced a marketable up to 65% WO3 concentrate from a simple gravity and flotation flow sheet. Significant concentrate grades of other metals including copper (17.6%) and molybdenum (13%) have been recovered via flotation, giving potential for a poly-metallic development.
There has been no substantial exploration or mining undertaken at Hatches Creek since 1957. Numerous historical underground mines are present which exploited high grade quartz veins containing wolframite and to a lesser extent scheelite, bismuth and copper, mostly to the water table and to a maximum depth of only 60 m. A comprehensive review of the Hatches Creek site was undertaken by the Bureau of Mineral Resources Geology and Geophysics (Commonwealth Government) and published in 1961. This included detailed mapping and surveying of most of the mine workings. This work suggests that the mineralisation is open at depth and the previously mined reefs show excellent continuity. Review of this data suggests that the Hit or Miss Group is a high priority target for potential open pit mining in view of the large number of individual mineralised veins present.
In October 2016 GWR reported the results of a dump sampling program where 128 of the 138 samples assayed greater than 0.10% WO3,with numerous results above the 0.50% WO3. Twelve of the samples returned high grade tungsten results of greater than 1.0% WO3. Download ASX announcement dated 27 October 2017 here.
A maiden RC drilling program testing priority targets for 1740m was coompleted in November 2016, assay results are pending.