Advancing Critical Minerals Round 17, 2024-2025 Investigation of Critical Minerals in the Tennant Creek Mineral Field Final Report With particular interest to their association with IOCG style mineralisation at Warrego (ML 30888), Juno (ML 33777) and Nobles Nob (ML 33779)

Abstract

The Tennant Creek Mineral Field (TCMF) hosts a large number of high-grade Cu-Au-Bi enriched ironstones (IOCGs). Tennant Mining holds leases over three of these deposits in particular, the Nobles Nob, which produced 1.12 million ounces of gold at 17.0 g/t, Juno, which produced 839,000 ounces of gold at 57.0 g/t whilst Warrego, the largest historic mine in Tennant Creek, which produced 1.2 million ounces of Au at 8.0 g/t as well as 80,000 tonnes of Cu and 10,000 tonnes of Bi throughout its operation. This report outlines the results of the systematic re-analysis of 280 pulp samples from RC and diamond drilling at Nobles, Warrego and Juno were re-submitted for multi-element analysis (60 elements, including 12 REEs) using a 4-acid digestion and ICP-MS/OES instrumental finish with an emphasis on critical elements. Historical aqua regia Au analysis (with fire assay for overrange) was included in the data set to save money on the analytical costs.