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Bangemall Manganese Projects
De Grey has lodged three new tenement applications over manganese prospective areas of the Proterozoic Bangemall Basin, between Exmouth and Beyondie, totalling 924km2. The applications were filed on an opportunistic basis as the result of De Grey's ongoing monitoring of tenement relinquishment and competitor activity.
The manganese prospectivity of certain shale horizons of the Ullawarra Formation in this area is indicated by results reported by competitor activity along strike and by Geological Survey of Western Australia geochemical sampling datasets.
Surficial secondary manganese enrichment was confirmed during a reconnaissance sampling program in September 2009 within two of the applications, with 5 of 12 samples collected returning >20% Mn. Four of these samples returned >30% Mn, to a maximum of 36.8%.
Evaluation of the manganese potential of the new applications is at an early stage. Systematic prospecting of the identified manganiferous horizons (which potentially extend for over 40km strike within the new applications) will be required to determine the potential for more significant bodies of high-grade manganese mineralisation.
Initial reconnaissance rock sampling results, Bangemall Manganese Project
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