Key Recent Releases
- New High Priority Uranium Targets 20 Nov 2023
- Marmota engages Uranium Expert 6 Nov 2023
- Marmota to grow Junction Dam uranium resource 26 Oct 2023
Summary of exploration
Ground based geophysical surveys (gravity, electromagnetics - EM) assisted greatly with drill targeting at Junction Dam. These geophysical techniques highlighted the Yarramba Palaeochannel which hosts the uranium mineralisation at Junction Dam.
In total, 222 rotary mud drill holes have been drilled at the Junction Dam project. 11 sonic drill holes have also been drilled. Downhole gamma readings indicating high grade uranium mineralisation hosted within carbonaceous and pyritic sediments of the Eyre Formation are regularly encountered at the project area. Sands of the Eyre Formation offer an ideal environment for sandstone-hosted uranium. The strike length of mineralisation at the project has now extended to approximately 15 kilometres.
Quantitative Evaluation of Minerals by SCANning electron microscopy (QEMSCAN) has been undertaken on mineralised samples from the sonic drilling program. Uranium minerals, uraninite and autinite are confirmed to be present, analogous to the uranium minerals present at Honeymoon. The QEMSCAN studies also indicated that up to 98% of the uranium is potentially leachable.
