Northern Territory Projects

Summary
Dynasty Metals Australia (DMA) own 4 tenements in the Northern Territory, EL’s 25624, 25626, 25627 and 25628, covering an area of 1504 km2

These tenements sit within the highly prospective Arunta Block and within 100km of Napperby deposit. The potential for similar calcrete style Uranium deposits is high within the retained areas. Little work has been done on the areas previously making this project an attractive grassroots exploration project.

Geology:
These tenements are in the northern Arunta Block. The geology of the area consists of basement gneisses, schists and granulite of the Strangeways Metamorphic Complex; these have been interpreted as metasediments and metavolcanics, but have undergone extreme metamorphism. Intruding into the basement are the Proterozoic Crooked Hole and Ida granites, and the Woodgreen Granite Complex, which have locally developed a gneissic texture. These are variably overlain by Cainozoic soils, alluvium and sands, with variable calcrete. Areas of the granitic intrusions and exposed basement are extremely
weathered and have a well developed laterite profile, making their origin difficult to determine; these areas are clay rich and occasionally pisolitic, with variable amounts of silcrete.

The local geology of the tenements is dominated by more recent sediments draining “hot” granites. These granites are seen as the likely source for secondary uranium deposits. These deposits may have radiometric anomalies associated with them, but they can also be buried. Some of the major drainages in the region are high in uranium and this demonstrates the potential of the model.

Fig 1. Eastern tenement geology

Fig 2. Western tenement geology

Mineralisation:
The Napperby Uranium project (Toro Energy) is located some 75km to the south of these tenements. This project has a resource of 1420t of U3O8 in calcrete. The main target of mineralisation over DMA’s tenements will be Calcrete style uranium although unconformity and roll-front style mineralisation should also be examined. The radiometric image in Fig 3 shows the large Uranium anomaly along the major drainage in the area.

Fig 3. Uranium channel in regional radiometrics