High Grade Brines From Cauchari Drilling

- June 12th, 2019

Lake on-track to major discover at 100% owned project

  • High grade brines with excellent lithium values up to 538 mg/L returned from high flow brines at 261m depth at Lake’s Cauchari Lithium Brine Project, Argentina.
  • Results and flow rates over a series of horizons show continuity with lithium brine horizons announced from adjoining pre-production areas in the heart of the Lithium Triangle.
  • Results provide further confirmation of continuity of Lake drilling in the same basin with similar brines as adjoining world-class major projects. Better results are anticipated at depth.
  • Drill rig currently below 290m, targeting ~350-450m sand horizon that has recorded higher lithium values and fluid flows in the adjoining project – lithium values increasing with depth.

Lake Resources NL (ASX:LKE) announced today further high-grade lithium brine results from high flow brines following drilling at its 100% owned Cauchari Lithium Brine Project in Argentina. These ongoing brine results show continuity over a series of horizons with adjoining major projects (Figures 1-4), further increasing Lake’s confidence in Cauchari and Lake’s ability to replicate the success of nearby multi-billion dollar projects located in the heart of the Lithium Triangle.

High grade conductive brines with lithium values up to 538 mg/L were returned from high flow brines at a depth of 261m with low Mg/Li ratios.

These results over a series of horizons are similar to lithium brine horizons announced from the adjoining preproduction area, showing continuity with Ganfeng/Lithium Americas (LAC) and the Advantage Lithium (AAL)/ Orocobre joint venture that are attracting significant corporate transactions. Lake is clearly drilling in the same basin with similar brines, with even better results anticipated at depth (refer to ASX announcement 28 May 2019 for past results announced from adjoining projects).

These are preliminary results and larger samples will be collected once the hole is completed. The diamond drill rig is now below 290m, although drilling has been challenging requiring more time due to high fluid pressures. The target is a sand horizon estimated between 350-450m which has recorded higher lithium values and fluid flows in the adjoining project.

The latest results follow increased investor support for Lake, with the Company recently attracting approximately $2.7 million (before costs) in new funding from offshore and local sophisticated and professional investors (refer ASX announcement 11 June 2019). These funds will allow for an acceleration of drilling at Cauchari, to be followed by drilling at Lake’s equally prospective Olaroz project.

Current drilling aims to unlock value from this exciting project, which is growing in scale located immediately adjacent to a world-class brine project in pre-production in the Lithium Triangle, approximately 500m from the Ganfeng/Lithium Americas Cauchari project.

Commenting on the latest update, Lake’s Managing Director Steve Promnitz said: “Lake is on track to record a major discovery here at Cauchari, with results showing continuity of lithium brines from the major projects located nearby that are currently proceeding towards production. As we advance towards the target depth, these results auger well for improving success at depth, and later at the Olaroz project, where the Company has a 30km belt as an extension to the adjoining production area.

“Cauchari is rapidly gaining momentum as a highly valuable project for Lake, adding to our portfolio of 100% owned projects in the heart of the Lithium Triangle, including Olaroz and the world-class Kachi project. With talks progressing with potential development partners, we are in an excellent position to deliver increased value for shareholders.”

lake resources diamond drilling

Figure 1: Foraco diamond drill rig at Cauchari

lake resources more drilling

Figure 2: Location of LKE’s drill operations at Cauchari in relation to Advantage Lithium/Orocobre & Gangfeng/Lithium Americas leases. (Note: The marked boundaries are indicative only. Please refer to the detailed map).

lake resources map

Figure 3: Cauchari Lithium Project, with adjoining Ganfeng / Lithium Americas project and Orocobre / Advantage Lithium project showing interpreted West Fan Unit and the targeted Lower Sand Unit (Orocobre announcement and Advantage Lithium announcement 24/04/19 – Figure 7.10 from NI43-101 report). Lake interprets the western boundary (left hand side) to be steep and faulted rather than dipping 45 degrees as in this diagram.

Figure 4: Cauchari Lithium Project, with adjoining Ganfeng / Lithium Americas combined resource and Orocobre / Advantage Lithium combined resource with (Orocobre announcements 7/11/2017, 4/12/2017, 18/01/2018, 15/03/19; Advantage Lithium announcement 5/3/2018, 10/01/2019, 7/03/19, 24/04/19). (Third Party Resource details summarised in LKE’s ASX announcement dated 6 Sept 2018)

Competent Person’s Statement – Kachi Lithium Brine Project

The information contained in this ASX release relating to Exploration Results has been compiled by Mr Andrew Fulton. Mr Fulton is a Hydrogeologist and a Member of the Australian Institute of Geoscientists and the Association of Hydrogeologists. Mr Fulton has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a competent person as defined in the 2012 edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Andrew Fulton is an employee of Groundwater Exploration Services Pty Ltd and an independent consultant to Lake Resources NL. Mr Fulton consents to the inclusion in this announcement of this information in the form and context in which it appears.

About Lake Resources NL (ASX:LKE)

Lake Resources NL (ASX:LKE, Lake) is a lithium exploration and development company focused on developing its three lithium brine projects and hard rock project in Argentina, all owned 100%. The leases are in a prime location among the lithium sector’s largest players within the Lithium Triangle, where half of the world’s lithium is produced. Lake holds one of the largest lithium tenement packages in Argentina (~200,000Ha) secured in 2016 prior to a significant ‘rush’ by major companies. The large holdings provide the potential to provide consistent security of supply, scaleable as required, which is demanded by battery makers and electric vehicle manufacturers.

The Kachi project covers 69,000 ha over a salt lake south of FMC’s lithium operation and near Albemarle’s Antofalla project in Catamarca Province. Drilling at Kachi has confirmed a large lithium brine bearing basin over 20km long, 15km wide and 400m to 800m deep. Drilling over Kachi (currently 16 drill holes, 3100m) has produced a maiden indicated and inferred resource of 4.4 Mt LCE (Indicated 1.0Mt and Inferred 3.4Mt) within a 8-17 Mt LCE exploration target grading in the range of 310 mg/L to 210 mg/L lithium 1 (refer ASX announcement 27 November 2018).

A direct extraction technique is being tested in partnership with Lilac Solutions, which has shown 80-90% recoveries and lithium brine concentrations in excess of 25000 mg/L lithium. Phase 1 Engineering Study results have shown operating costs forecast at US$2600/t LCE in the lowest cost quartile 2 . This process is planned to be trialled on site in tandem with conventional methods as part of a PFS to follow the resource statement. Scope exists to unlock considerable value through partnerships and corporate deals in the near term.

The Olaroz-Cauchari and Paso brine projects are located adjacent to major world class brine projects either in production or being developed in the highly prospective Jujuy Province. The Olaroz-Cauchari project is located in the same basin as Orocobre’s Olaroz lithium production and adjoins Ganfeng Lithium/Lithium Americas Cauchari project, with high grade lithium (600 mg/L) with high flow rates drilled immediately across the lease boundary.

A new drill rig is being used to increase the depth capacity and speed at Cauchari. High grades and high flow rates have been reported over a series of horizons, similar to lithium brine horizons announced from adjoining pre-production areas under development. Results provide further confirmation of the continuity lithium bearing horizons and demonstrate that Lake is drilling in the same basin as adjoining world-class major projects. Better results are anticipated at depth. High fluid pressure have meant that conditions are challenging. This will be followed by drilling extensions to the Olaroz area in LKE’s 100% owned Olaroz leases.

Significant corporate transactions continue in adjacent leases with development of Ganfeng Lithium/Lithium Americas Cauchari project with Ganfeng announcing a US$237 million for 37% of the Cauchari project previously held by SQM, followed by a further US$160 million to increase Ganfeng’s equity position to 50% on 1 April 2019, together with a resource that had doubled to be the largest on the planet. Ganfeng then announced a 10 year lithium supply agreement with Volkswagen on 5 April 2019. Nearby projects of Lithium X were acquired via a takeover offer of C$265 million completed March 2018. The northern half of Galaxy’s Sal de Vida resource was purchased for US$280 million by POSCO in June-Dec 2018. LSC Lithium was acquired in Jan-Mar 2019 for C$111 million by a mid-tier oil & gas company with a resource size half of Kachi. These transactions imply an acquisition cost of US$55-110 million per 1 million tonnes of lithium carbonate equivalent (LCE) in resources.

For more information on Lake, please visit http://www.lakeresources.com.au/home/

 

Click here to connect with Lake Resources N.L. (ASX:LKE) for an Investor Presentation.

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