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Aura Energy

Publié le 04 juillet 2016

Aura Secures Lithium and Soda Ash Prospects.pdf

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Mots clés associés :   Lithium | Potassium | Uranium |

Aura Secures Lithium and Soda Ash Prospects.pdf

QUARTERLY REPORT: 27 January 2015

4 JULY 2016

AURA ENERGY TAKES POSITION IN A SABKHA (SALT PAN) IN MAURITANIA WITH POTENTIAL TO HOST MULTIPLE MINERALS

POTENTIAL SODA ASH SOURCE FOR TIRIS LEACHING AGENT SABKHAS ARE A KNOWN POTENTIAL LITHIUM SOURCE

  • Aura Energy's continued review into other mineral opportunities within Mauritania has identified a Sabkha-hosted soda ash and lithium prospect

  • Large scale Sabkha area of 85 km2

Aura Energy Limited (AEE) is pleased to announce that as part of a continual review of mineral opportunities in Mauritania it has taken a position in 2 large Sabkhas (salt pans) in the region of its Tiris Uranium Project with a view to exploring this formation for soda ash and other minerals. Soda ash is the leach agent proposed for Tiris and if the source were confirmed it would provide significant benefits to the Tiris project economics.

Importantly Sabkha's are known sources of other minerals including lithium.

The Sabkha was identified by the Independent Expert, Wardell Armstrong's (WAI) geological consultant Greg Moseley who is conducting a review of Aura Energy's projects, as part of the Competent Persons Report for its AIM listing. Mr Moseley has previously conducted reviews of lithium and other valuable salts potential in Sabkhas and is currently involved in such a review elsewhere in Africa.

The WAI review noted;

"On the return trip from the Tiris East uranium project, the route crosses a very wet clay-rich "pan" or Sabkha. The surface and geological setting of the pan was strongly reminiscent of pans known to Mr Moseley in other parts of Africa that are being investigated for lithium and other valuable salts."

WAI's full review of the Sabkha is attached in Appendix 1.

Figure 1: Location of the Sabkha relative to the Aura Uranium Exploration Licences

The Sabkhas which are 165 km from Hippolyte are large on a relative basis covering an area of over 85 km2. Sabkha is an Arabic name for a salt-flat that has come into general use in sedimentology. They are also known as "Salars" in South America and generically as salt pans or flats. The valuable salts can occur in the Sabkha environment either in clays at or near surface or in brine reservoirs deeper in the lake sediments.

The location of the Sabkha between Aura's Tiris Project East and West tenements provide a favourable location should a source of soda ash (Na2CO3) be identified. Aura's 2014 Scoping Study identified the need for up to 16,000 tonnes of soda ash which, including transport, would account for approximately 25% of Tiris' operating costs. Utilising a nearby source of soda ash has the potential to significantly reduce these costs. Additionally potential for revenue from other minerals such as lithium or back-loading soda ash to port for export would further reduce the Tiris operating cost.

Similar to Aura's recent gold acquisition of the Tasiast South prospect the location of the Sabkha soda ash and lithium prospect means that the exploration/evaluation of the prospect can be managed efficiently within the company's existing management resources without distraction from Aura's core uranium focus. In fact it forms a key synergy with the

Tiris Uranium Project development given its potential impact on the project via logistical simplification and the potential for lowering operating costs on Tiris even further.

Figure 2: Location of the Sabkha relative to the Aura Uranium Exploration Licences

The Sabkha concerned, appears to exhibit many of the characteristics required when considering the potential for the associated economic mineralisation, e.g. closed drainage basin, favourable geological environment, arid climate.

Consequently, the exploration potential for the two possible styles of mineralisation, viz: surficial lithium (-sodium-potassium-boron)-rich clays or brine "pools" deeper within the enclosed basin, appears to be good.

Peter Reeve, Aura Energy's Executive Chairman said "Aura remains extremely fortunate to have such a high quality assembly of both internal and external technical professionals to advance its project development aspirations. The identification of this Sabkha is another step forward for Aura in Mauritania. The potential to lower costs via a local source of soda ash for the Tiris project is significant for this already high margin project".

"In addition, to have the possibility of uncovering a co-incident lithium source from the Sabkha that Aura has been able to secure, given the extraordinary environment for that element at present, underscores Aura's commitment to maintaining both its brief to identify new opportunities and its strong technical team despite the downturn in the sector".

"Aura will evaluate this soda ash and lithium prospect with vigour", Mr Reeve continued.

Figure 3: Satellite Image of the Sabkha (yellow outline) GPS track of the CPR site visit in blue

Aura's Sabkha soda ash and lithium prospect has the following attributes;

  • Prospect is located in the centre of Aura's Tiris Project area

  • The Sabkhas area is large at 85 km2 relative to typical Sabkhas

  • If a soda ash source is revealed it could reduce operating costs significantly for Tiris

  • Lithium is a known co-product in such Sabkhas

  • Wardell Armstrong's consultant who identified the prospect is experienced in these occurrences and is currently evaluating similar lithium bearing Sabkhas in other regions of Africa

  • The initial evaluation cost for the Sabkha is inexpensive

    Future Work Program and Other Opportunities

    Next steps envisaged for evaluation of the Sabkha include:

  • Limited surface pitting/sampling and assay of the Sabkha to establish the potential

  • Shallow auger drilling - probably hand augering to 3-4 metres to confirm the pit results.

Given the limited scope and low cost of the initial evaluation phase Aura hopes to conduct this program in the third quarter 2016 with initial results soon after that.

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Aura Energy est une société d’exploration minière d'uranium basée en Australie.

Aura Energy détient divers projets d'exploration en Australie et en Suede.

Ses principaux projets en exploration sont MICHELIN OPEN PIT au Canada, NEALE, LAKE MINIGWAL, LAKE AUSTIN, LAKE MOORE, SHAWS BORE, GUNBARREL BASIN, WONDINONG, LAKE BARLEE, ALTONA, LAKE GILES et NEALE PROJECT en Australie et STORSJÖN en Suede.

Aura Energy est cotée en Australie. Sa capitalisation boursière aujourd'hui est 213,9 millions AU$ (154,4 millions US$, 135,3 millions €).

La valeur de son action a atteint son plus haut niveau récent le 18 février 2011 à 0,56 AU$, et son plus bas niveau récent le 24 avril 2020 à 0,00 AU$.

Aura Energy possède 792 360 000 actions en circulation.

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26/07/2007Presentation to Australian Uranium Conference
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16/09/2016Aura Completes $5 Million Raising 16 September 2016.pdf
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27/06/2016Aura Acquires Significant Greenstone Belts 27 June 2016 .pdf
20/03/2016Appendix 3B and 708A Notice.pdf
20/01/2016Change of Director's Interest Notice.pdf
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17/12/2015Results of AGM November 2015.pdf
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20/04/2015Aura Placement Raises 1 Million
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26/03/2015Developing High Margin Uranium Projects
16/03/2015Half Yearly Report December 2014
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31/10/2012Quarterly Activity Report September 2012
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