Kodal Minerals PLC Maiden Mineral Resource of 17.3Mt at 1.20% Li2O (8121Z)

TIDMKOD

RNS Number : 8121Z

Kodal Minerals PLC

05 September 2018

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 ("MAR"). With the publication of this announcement via a Regulatory Information Service, this inside information is now considered to be in the public domain.

Kodal Minerals Plc / Index: AIM / Epic: KOD / Sector: Mining

5 September 2018

Kodal Minerals plc ('Kodal Minerals' or the 'Company')

Maiden Mineral Resource Estimate at Bougouni

Kodal Minerals, the mineral exploration and development company focussed on the exploration and development of its Bougouni Lithium Project in Southern Mali, West Africa ("Bougouni" or the "Project"), is pleased to announce the maiden Mineral Resource estimate, preliminary open pit optimisation studies and mineral processing review for the development of the Bougouni Project. To view this announcement with the illustrative diagrams please use the following link: http://www.rns-pdf.londonstockexchange.com/rns/8121Z_1-2018-9-5.pdf

Highlights

   --   Maiden Mineral Resource of 17.3Mt at 1.20% Li(2) O in the Inferred category. 
   --   The Maiden Mineral Resource is made up of Kodal's three most advanced prospects: 

o Sogola-Baoule: 10.4Mt at 1.18% Li(2) O;

o Ngoualana: 4.7Mt at 1.34% Li(2) O;

o Boumou: 2.2Mt at 1.01% Li(2) O

(Mineral Resource reported using a 0.5% Li(2) O lower cut-off, no top cut-off and is based on the wireframe interpretation of mineralised pegmatites)

-- Preliminary open pit optimisations have been undertaken to identify key areas for further drill testing and definition of the pegmatite hosted mineralisation.

-- Mineralisation captured within these conceptual open pits totals 13.2Mt at 1.2% Li(2) O. This is not an Ore Reserve estimate, however it highlights areas where the optimised shells are resource constrained and these areas will be the focus for future drilling campaigns.

-- Separately from the Mineral Resource and optimisation study, Kodal has commissioned a Processing Review by independent engineering consultants, Wave International, based on the ongoing metallurgical testwork for the Bougouni mineralisation. This is considered an order of magnitude study.

-- This review indicates a capital cost of AUD$14M for a 1Mtpa dense media separation plant component. A full plant will require a crushing circuit and additional materials handling components.

-- The processing review further indicates a potential production cost of US$400 per tonne of spodumene concentrate which compares to a current market selling price of between US$800 and US$900 per tonne.

-- Exploration and definition drilling for resource expansion and continued testing of new target areas is underway.

Bernard Aylward, CEO of Kodal Minerals, said: "This maiden Mineral Resource estimate is a major milestone in the advancement of the Bougouni Lithium Project as it confirms the potential for future mining development. The fact that the estimate is supported by initial engineering studies showing potential for a minimum ten year mine life with low capital costs and robust economics is very encouraging. Importantly, this maiden resource estimate is based on our three most advanced prospects, which remain open along strike and at depth, and we still have a very large project area to explore. Should these exploration efforts be successful, the potential to increase the annual production of the Project is significant. We have already identified a pipeline of prospects for additional drill testing that have the potential to significantly expand the Bougouni Project.

"This Mineral Resource estimate places the Bougouni Project in the top 15 hard rock lithium projects worldwide. We are in a very fortunate position of already having secured an off-take partner and we have strong commitments of support within Mali for the future mining development. The order of magnitude study undertaken by our engineering consultants Wave International has highlighted a potential low capital cost and an indicative operating cost which is approximately half of the current prices being reported for spodumene concentrate.

"This is a very exciting phase for the Project. Our preliminary mining and processing studies highlight a potential long-life mine producing a high grade, low impurity spodumene concentrate demanded by the market. The next stages of work at Bougouni will be the continued exploration and definition drilling, upgrade of the Mineral Resource estimate to Indicated status, continued study on the open pit optimisation with a focus on reducing mining costs and finally continued metallurgy studies to optimise the processing plant."

Further Information

Mineral Resource Estimate

The maiden Mineral Resource estimate has been completed by independent geological consultants CSA Global. Kodal supplied a geological database and verified the geological interpretation that was used to define the lithium mineralised pegmatite bodies.

Resource estimation was completed for the Ngoualana, Sogola-Baoule and Boumou prospects. All of the Mineral Resource is classified as Inferred. The level of data for the Ngoualana and Sogola-Baoule prospects could support an upgrade to Indicated status following completion of a field visit by the CSA Global resource geologist who is the Competent Person for the resource estimation. The resource is reported using a lower cut-off grade of 0.5% Li(2) O, no upper cut-off has been used. The geological model for the resource estimate was developed with a focus on geological logging of pegmatites as the primary method for building the 3-D model, with assay grade a secondary vector utilising a nominal 0.3% Li(2) O lower cut-off as a guide for economic significance (note the guide for building the 3-D model of 0.3% Li(2) O is different from the reporting lower cut-off of 0.5% Li(2) O that is applied following the completion of the block modelling).

The Mineral Resource estimate for the Ngoualana, Sogola-Baoule and Boumou prospects are tabulated below. These mineral resources are reported in accordance with the JORC Code(1) :

 
                                      Contained Li(2) 
                  Tonnes   Li(2) O%          O 
                   (Mt)      Grade          (kt) 
  Sogola_Baoule    10.4      1.18          122.2 
                 -------  ---------  ---------------- 
      Ngoualana    4.7       1.34          62.8 
                 -------  ---------  ---------------- 
         Boumou    2.2       1.04          22.9 
                 -------  ---------  ---------------- 
     Total         17.3      1.20          207.9 
                 -------  ---------  ---------------- 
 

Notes: Mineral resources are reported using a 0.5%Li(2) O cut-off. Figures may not sum due to rounding. The contained metal is determined by the estimated tonnage and grade.

The JORC code Table 1 will be available to view via the Company's website at www.kodalminerals.com

Preliminary Mining Assessment

A preliminary open pit mining optimisation study was undertaken to assist in the planning of future infill and extension drilling. This optimisation study was completed using conservative inputs to ensure a robust project and demonstrate potential future mining. This study is undertaken early in the assessment of the Bougouni project and is not attempting to define an Ore Reserve estimate.

The table below summarises the total mineralisation captured within the optimised open pit shells. This is based on the full resource estimate (no-cut off, full model) and as the Mineral Resource is at an Inferred category this does not represent any attempt to define an Ore Reserve estimate. To advance this preliminary optimisation study, additional work will involve a detailed analysis of input costs (mining and processing as well as transport), processing recoveries, hydrology and geotechnical investigations which will lead to the commencement of open pit design production scheduling work.

 
                  Tonnes   Li(2) O%   Li(2) O - Contained 
 Open Pit          (Mt)      Grade         Metal (kT) 
 Ngoualana         3.6       1.27            46.1 
---------------           ---------  -------------------- 
 Sogola-Baoule     8.9       1.13            100.5 
---------------           ---------  -------------------- 
 Boumou            1.2       1.10            13.1 
---------------           ---------  -------------------- 
                   13.7      1.16            159.7 
---------------           ---------  -------------------- 
 

Note: Reporting figures using a 0.0% Li(2) O cut-off within preliminary pit shells. This is not an Ore Reserve estimate. Further work is required to assess all the modifying factors as well as demonstration of the economic viability of the project.

From this initial optimisation it is clear that the Sogola-Baoule has potential to provide the most tonnage to any potential processing plant, while the Ngoualana prospect has significant potential to add higher-grade material into the processing blend.

The optimisation of the Sogola-Baoule prospect has captured the majority of the defined Mineral Resource estimate and is model constrained in numerous areas providing immediate drilling targets for follow-up to potentially expand the Mineral Resource. The north-eastern portion of the resource has intersected wide, high grade material and this is a priority area for exploration drilling to target extensions to the current mineral resource estimate and positive results here may have a significant impact on the Sogola-Baoule prospect.

The optimisation of the Ngoualana prospect again has captured the majority of the mineralisation. Additional drilling in this area will focus on the western and eastern extensions, as well as continuing to target parallel and off-set positions.

The Boumou prospect is at an earlier stage of exploration assessment. The drilling completed has identified several mineralised pegmatite veins, and this optimisation study is highlighting key areas for additional exploration drilling to define this target area.

Metallurgy and Preliminary Processing Plant studies

Kodal has commissioned the engineering consultant group Wave International to undertake a review of Kodal's continuing metallurgical testwork programme and to provide a high level overview of potential processing flow sheet, processing plants and capital expenditure. Wave International has been very active in the Lithium development and processing area and has relevant expertise to help Kodal with the potential development of the Bougouni project.

The review completed by Wave International has highlighted the fact that the metallurgical trends exhibited from the initial testwork on the Bougouni mineralisation are consistent with other spodumene deposits currently under study, development or operation. On this basis, a conceptual flow sheet utilising a single stage DMS circuit has been recommended. This is a well understood processing circuit and in use in many lithium mining and processing operations. Further recommendations for ongoing metallurgical testwork and scoping level study parameters have been recommended by Wave International and these have been incorporated into the ongoing metallurgical testwork programme.

In addition to the review of the metallurgical testwork, Wave International has also undertaken an "Order of Magnitude" review of potential capital costs (Capex) (note for the development of a 1Mtpa DMS plant only) and operating costs for an open pit mining operation and processing plant. This study has indicated Capex of AUD$14M to build the dense media separation component of the processing plant. Additional capital will be required for a crushing circuit as well as the tailings storage facility and other requirements. The Capex required for the open pit operations and associated infrastructure is not part of this review and will be undertaken in the ongoing optimisation studies.

A preliminary review of the operating costs for the potential open pit mining and processing at Bougouni has been undertaken by Wave International and indicate costs in the order of US$400 per tonne of spodumene concentrate produced. The costs estimates have initially been compared to actual operating mines of similar size in Australia and will be modified following review and adjustment for local Mali factors. This compares favourably with the current market price of approximately US$800 - 900 per tonne of concentrate.

Future Activities

Kodal has a very busy schedule planned to continue with the exploration and development studies of the Bougouni Lithium project. The activities will consist of:

Exploration:

-- Exploration drilling is continuing at the Sogola-Baoule prospect to continue targeting extensions of the prospect and increases in the resource;

-- Exploration reverse circulation drilling will recommence following the rainy season, with a first priority being additional drilling at the Boumou prospect, the Sogola-Baoule extensions and offsets and testing of new targets.

Metallurgical testing

-- Metallurgical testwork is continuing and is focussed on optimising the processes need for the Bougouni mineralisation;

-- Additional testwork will incorporate samples from the Sogola-Baoule prospect and will be looking to optimise a "processing blend".

Mining studies and Optimisation

-- Kodal will continue with the review of input mining and processing costs into the study models to improve potential mining operations;

   --     A review of potential open pit designs and capital requirements will be undertaken; 

-- An update of the Mineral Resource estimate is expected in the fourth quarter of 2018 following a site visit by the independent geologist and additional drill testing.

In addition to this work, Kodal is continuing with the Environmental and Social Impact Assessment with the aim of completing the study in the first quarter of 2019.

The results of this work programme are designed to allow Kodal to lodge a mining licence application with the Mining Department in Mali in the second quarter of 2019.

Lithium

The pegmatite veins intersected by drilling at Bougouni are spodumene rich (20-30% spodumene content) low mica pegmatite bodies with spodumene being the main lithium bearing mineral in most hard rock lithium deposits. The high-grade lithium mineralisation returned in the assays compares favourably with other hard rock spodumene mineralised pegmatite veins under development around the world where grades range from 1.1% Li(2) O through to 1.4% Li(2) O. The intersections reported in this announcement have been estimated using a 1.0% Li(2) O lower-cut and have consistently high mineralisation throughout the pegmatite bodies.

An initial review of the development process for the Bougouni lithium pegmatite bodies was completed as part of the World Bank sponsored SYSMIN study completed by CSA Global in 2008. This report indicated that a process of mine site crushing, screening and dense media separation techniques was able to produce a good quality spodumene concentrate, with grade over 6% Li(2) O. Further tests completed by Shandong Ruifu Lithium Co Ltd, one of the largest lithium carbonate producers in China, and reported by the Company on 9 October 2017, produced a high quality, low impurity battery grade lithium carbonate using spodumene concentrate from Bougouni.

Recent lithium concentrate (grade 6%) prices range between US$800/t and US$950/t.

The exploration results and activity reported in this announcement have been reviewed by Mr Bernard Aylward who is a Member of the Australasian Institute of Mining and Metallurgy. Mr Aylward 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 Qualified Person as defined in the AIM Note for Mining and Oil & Gas Companies dated June 2009. Mr Aylward consents to the inclusion in this announcement of the matters based on his information in the form and context in which it appears.

The Mineral Resource estimates have been prepared by Dr Matthew Cobb who is a Member of the Australian Institute of Geoscientists. Dr Cobb is a Principal Resource Consultant with CSA Global and 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 Qualified Person as defined in the AIM Note for Mining and Oil & Gas Companies dated June 2009. Dr Cobb consents to the inclusion in this announcement of the matters based on his information in the form and context in which it appears.

**S**

For further information, please visit www.kodalminerals.com or contact the following:

 
 Kodal Minerals plc 
  Bernard Aylward, CEO                          Tel: [phone] 
                                                345 
 Allenby Capital Limited, Nominated Adviser 
  Jeremy Porter/Nick Harriss                    Tel: [phone] 
                                                5656 
 SP Angel Corporate Finance LLP, Financial 
  Adviser & Broker                              Tel: [phone] 
  John Mackay                                   0470 
 St Brides Partners Ltd, Financial PR 
  Susie Geliher/Lottie Wadham                   Tel: [phone] 
                                                1177 
 

Glossary of Technical Terms

 
 "Indicated      that part of a Mineral Resource for 
  Resource"       which tonnage, densities, shape, physical 
                  characteristics, grade and mineral content 
                  can be estimated with a reasonable level 
                  of confidence. It is based on exploration, 
                  sampling and testing information gathered 
                  through appropriate techniques from 
                  locations such as outcrops, trenches, 
                  pits, workings and drill holes. The 
                  locations are too widely or inappropriately 
                  spaced to confirm geological and/or 
                  grade continuity but are spaced closely 
                  enough for continuity to be assumed 
 "Inferred       that part of a Mineral Resource for 
  Resource"       which tonnage, grade and mineral content 
                  can be estimated with a low level of 
                  confidence. It is inferred from geological 
                  evidence and assumed but not verified 
                  geological and/or grade continuity. 
                  It is based on information gathered 
                  through appropriate techniques from 
                  locations such as outcrops, trenches, 
                  pits, workings and drill holes which 
                  may be limited or of uncertain quality 
                  and reliability 
 "JORC"          The Australasian Joint Ore Reserves 
                  Committee Code for Reporting of Exploration 
                  Results, Mineral Resources and Ore Reserves 
                  2012 (the "JORC Code" or "the Code"). 
                  The Code sets out minimum standards, 
                  recommendations and guidelines for Public 
                  Reporting in Australasia of Exploration 
                  Results, Mineral Resources and Ore Reserves 
 "Measured       that part of a Mineral Resource for 
  Resource"       which tonnage, densities, shape, physical 
                  characteristics, grade and mineral content 
                  can be estimated with a high level of 
                  confidence. It is based on detailed 
                  and reliable exploration, sampling and 
                  testing information gathered through 
                  appropriate techniques from locations 
                  such as outcrops, trenches, pits, workings 
                  and drill holes. The locations are spaced 

                  closely enough to confirm geological 
                  and grade continuity 
 "Mineral        a concentration or occurrence of material 
  Resource"       of intrinsic economic interest in or 
                  on the Earth's crust in such form, quality 
                  and quantity that there are reasonable 
                  prospects for eventual economic extraction. 
                  The location, quantity, grade, geological 
                  characteristics and continuity of a 
                  Mineral Resource are known, estimated 
                  or interpreted from specific geological 
                  evidence and knowledge. Mineral Resources 
                  are sub-divided, in order of increasing 
                  geological confidence, into Inferred, 
                  Indicated and Measured categories when 
                  reporting under JORC 
 "Mt"            million tonnes 
 "t"             tonne (= 1 million grammes) 
 "cut off"       the lowest grade value that is included 
                  in a resource statement. It must comply 
                  with JORC requirement 19: "reasonable 
                  prospects for eventual economic extraction" 
                  the lowest grade, or quality, of mineralised 
                  material that qualifies as economically 
                  mineable and available in a given deposit. 
                  It may be defined on the basis of economic 
                  evaluation, or on physical or chemical 
                  attributes that define an acceptable 
                  product specification 
 "Kt"            Thousand tonnes 
 "Ore Reserve"   The econominically mineable part of 
                  a Measured or Indicated Mineral Resource 
 
 

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September 05, 2018 02:30 ET (06:30 GMT)