Preliminary geological report on the Tennyson No. 1 uranium prospect, Edith River area, Northern Territory

At Tennyson's No. 1 Prospect, 4 miles W.S.W. of Edith Siding, Geiger counts ranging from 4 to 10 times background were obtained at nine places in two shear zones in granite. The radioactive material is confined to narrow bands of hematitic lode material in and adjacent to narrow brecciated bands. At all localities a uranium-bearing mineral, probably meta-autunite, was present as a white film, which fluoresced bright green under ultra-violet light, on fracture surfaces. At the northern most locality some flakes of a green micaceous mineral, probably meta-torbernite, were observed. The lode formation has a total length of approximately 500 feet, is mainly 1.5 to 4 inches wide, evidencing to 18 inches over short lengths. The deposits having counts greater than four times background are mostly less than 3 feet long but two are approximately 20 feet in length. Assay samples were taken at the larger deposits. From examination under ultra-violet light it appears that the uranium content of the lode material will increase at a depth of a few inches below the surface. The deposits at Tennyson's No.1 Prospect appear to be too small and too low in grade to be profitably worked unless the grade improves considerably at depth.

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Published (Metadata Record) 05/03/2026
Last updated 06/03/2026
Organisation Australian Federal Government
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