Bangemall Basin Projects

(E52/1882, ELA52/1959, ELA52/1942, ELA08/1651, E09/1297) - Encounter 80%, Avoca 20%

Unconformity style deposits, such as those found in the Athabasca Basin in Canada and East Alligator River district in the Northern Territory, are located within Middle-Proterozoic sandstone-dominated sediments unconformably overlying metamorphosed Proterozoic basement.

Encounter targeted the northern and southern margins of the Bangemall Basin for unconformity style uranium mineralisation where the Mesoproterozoic Bangemall Basin sediments overlie the Palaeoproterozoic Capricorn Orogen to the south and Ashburton Basin to the north.

It is noted that unconformity style deposits are associated with anomalous concentrations of Co, As, Se, Ag, Ni and Mo. Principle Component Analysis on GSWA regional geochemical samples, located within 5km of the Proterozoic rocks of WA, generated a factor which highlighted anomalism in As, Mo, Sb and Uranium. Plotting this factor, along with individual scores for U, As, Co and Ni, highlighted several areas of coincident anomalism within the Mesoproterozoic rocks of the Edmund Group of the Bangemall Basin. Four targets selected by Encounter following the review of the GSWA data are the Pingandy Creek, Tchintaby Well, Waldburg Range and Wanna targets.

Tenement applications over these targets were extended outside the bounds of the specific unconformity targets to capture any significant adjacent areas of drainage that contain mapped calcrete bodies. These calcrete bodies may host secondary uranium mineralisation and will be explored in conjunction with the primary target zones.

A review of historical exploration within the area of the four Bangemall Basin projects identified an extensive area of low grade zinc and silver mineralisation within the Tchintaby Well project. Historical exploration has focused on the base metals potential of the shale units within the Bangemall sediments where intersections of up to 12m @ 1.1% Zn and 16g/t Ag were returned at the Andes Prospect. Recently an exploration licence application was made to cover the interpreted plunge direction of the base metals mineralisation south of Tchintaby.

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