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Vimy Resources defines large uranium corridor at Such Wow prospect

The prospect is part of the Alligator River Project in the Northern Territory.
Vimy Resources defines large uranium corridor at Such Wow prospect
Alligator River is about 220 kilometres east of Darwin

Vimy Resources Ltd (ASX:VMY) has identified a large, highly-prospective hydrothermal system in the maiden drilling program at its Alligator River Uranium Project in Arnhem Land.

First-pass reverse circulation (RC) drilling at the Such Wow prospect intersected the uranium hosted Cahill formation in all six holes and key targets were identified along major fault zones with extensive alteration haloes.

Significant uranium anomalism in one hole was encountered, with a peak grade of 0.16% equivalent uranium oxide within a 30-metre-wide uraniferous zone.

Such Wow is within the King River-Wellington Range joint venture with Rio Tinto Exploration Pty Ltd, with Vimy holding 75% ownership.

READ: Vimy Resources identifies high-priority uranium targets at Alligator River

Vimy managing director & CEO Mike Young said the company was excited by the results of the maiden drilling program at Such Wow.

Young said: “It’s the sheer size of the Such Wow prospect that we find remarkable.

“The combination of surface alteration and structural features, along with significant uranium anomalism in our last drill hole, reinforces its potential.

“Our exploration team has over twenty years of combined uranium experience in Arnhem Land and they have never seen a clear-cut surface expression of potential uranium mineralisation as was mapped at the Shiba zone about 120 metres above the unconformity.

“We’re confident that future drill programs at Such Wow will prove up more uranium mineralisation and help to build a pipeline of projects.”

Surface alteration at Such Wow


Unconformity-related uranium mineralisation

The previously undrilled prospect is deemed to be highly-prospective for unconformity-related uranium mineralisation.

This is based on the presence of the Cahill formation, and alteration and structural features identified from surface mapping and sampling, combined with available geophysical data.

The wide-spaced drilling program focused on targeting broad alteration haloes coincident with northwest to north-northwest-striking fault zones.

These zones are normally associated with uranium mineralisation at Alligator River and similar to those at the nearby Angularli deposit.

Vimy considers Such Wow a stand-out exploration target due to the overall size of the structural corridor, which is more than five times the size of the Angularli prospect.

Angularli has an inferred resource of 0.91 million tonnes at 1.29% uranium containing 25.9 million pounds.

Next steps

The results justify systematic surface sampling which may include termitaria, conventional soils and possibly biogeochemical sampling, as well as additional mapping across the sandstone escarpment.

Drill-spacing will also be increased, with traverses 200-300 metres apart, to a level consistent with hydrothermal alteration footprints typical of this style of deposit.

The Shiba zone is a high-priority drill target for 2019 due to its intense surface alteration and structural complexity.

Vimy is now reanalysing Such Wow’s geophysical data for additional prospectivity along the fault corridor which extends under shallow Cretaceous to the northwest of the escarpment.

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