Report on 1976 investigations EL 119 South Alligator Valley

Abstract

In the Sleisbeck area a rotary percussion drilling programme of 8 holes totalling 574 metres investigated two Track Etch radon anomalies close to the escarpment forming the northern margin of an area of Middle Proterozoic sediments and volcanics. Six holes tested the Middle/Lower Proterozoic unconformity at a site where drilling in 1975 had indicated accumulation of uranium at the unconformity. The second anomaly, located over a thick succession of volcanics, had not been previously tested. The north west margins of the Malone Creek Granite were mapped in detail in conjunction with a scintillometer survey in an effort to discover possible mineralisation of the type located at Anomaly 3-171. Sections of the Exploration Licence east of Coronation Hill and from Coronation Hill through to Pul Pul Hill were remapped on a reconnaissance basis in conjunction with scintillometer work. A total of twenty one new Mineral Leases were pegged in this general area. Only trace amounts of uranium were detected at the Middle/Lower Proterozoic unconformity at Sleisbeck. The results are of academic interest and the area has been relinquished. The work in the Malone Creek Granite area yielded no results comparable to those obtained at surface around Anomaly 3-171 and the area has been relinquished.