REG - Andrada Mining Ltd - Third Batch of Lithium Ridge Drill Results

Andrada MiningAnnouncement

Today 07:00

For best results when printing this announcement, please click on link below:
https://newsfile.refinitiv.com/getnewsfile/v1/story?guid=urn:newsml:reuters.com:20260609:nRSI4734Ha&default-theme=true

RNS Number : 4734H  Andrada Mining Limited  09 June 2026

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) as in force in the United Kingdom pursuant to the
European Union (Withdrawal) Act 2018. Upon the publication of this
announcement via Regulatory Information Service (RIS), this inside information
will be in the public domain.

Andrada Mining Limited

("Andrada" or the "Company")

High-Grade Lithium Results Confirmed in Third Batch of Drill Results from Lithium Ridge
Mineralisation Confirmed to Depth
Andrada Mining Limited (AIM: ATM, OTCQB: ATMTF), a tin producer with a portfolio of critical minerals mining and exploration assets in Namibia, is pleased to announce the third batch of results for an additional six holes of diamond drilling at Lithium Ridge Project ("LR" or the "Project"). The additional six holes show the presence of consistent high-grade lithium mineralisation from surface. Following the completion of drilling, the exploration team continues to prioritise logging and sampling activities to expedite sample delivery.
HIGHLIGHTS

§ High-grade lithium mineralisation confirmed across multiple drill holes,
including:

−   Drill hole LRD027: 9.05m @ 2.28% Li(2)O from 50.82m to 59.87m.

·   Including 3.97m @ 3.46% Li(2)O from 51.82m to 55.79m.

−   Drill hole LRD023: 9.64m @ 1.24% Li(2)O from 50.36m to 60.00m.

·   Including 5.11m @ 1.89% Li(2)O from 53.58m to 58.69m.

−   Drill hole LRD024: 13.27m @ 1.42% Li(2)O from 32.06m to 45.33m.

·   Including 6.79m @ 1.90% Li(2)O from 32.90m to 39.69m.

−   Drill hole LRD037: 3.97m @ 0.95% Li(2)O from 48.78m to 52.75m.

·   Including 1.51m @ 1.51% Li(2)O from 51.24m to 52.75m.

§ Valuable polymetallic co-products: Consistent associated tin and tantalum
mineralisation confirmed across all holes potentially enhancing project
economics through potential polymetallic revenue streams.

−   Drill hole LRD029: 4.97m @ 0.21% Sn and 130ppm Ta.

§ De-risking milestone: Successfully completed the extended Stage 1 drilling
campaign, delivering 143 holes comprising 16 500 metres of oriented core.

Anthony Viljoen, Chief Executive Officer, commented:
"We continue to receive exciting results from the recently completed drill programme at Lithium Ridge, conducted with our partners SQM. Intersection grades up to 3.46% Li(2)O near-surface, demonstrate exceptional quality and scale, reaffirming our shared conviction in the potential of the asset. Having strategically expanded our drilling footprint to fast-track the definition of the geological system's true boundary and economic value, these results further endorse our course of action. The additional presence of significant associated tin and tantalum mineralisation adds a highly attractive multi-commodity dimension to the potential project economic profile. Lithium Ridge is rapidly establishing itself as a standout, project within Andrada's critical minerals portfolio in Namibia."
RESULTS Overview

The results refer to an additional six drill holes and are reported as 'Whole
Intersections' in Table 1, representing pegmatite intersections from the top
to the bottom contact. Where these intersections contain schistose xenoliths,
the reported grades reflect the metal content of the pegmatite only, excluding
the schistose intervals. Intersections reported as "including" represent
selected higher-grade zones within the total pegmatite intersection. Spodumene
has been visually identified as the primary lithium-bearing mineral by the
project geological team. Tin and tantalum grades have also been highlighted as
potential by-product revenue streams.

Reporting Methodology

The boreholes were drilled at inclined angles to the horizontal and,
accordingly, the reported intersections are considered to represent apparent
widths rather than true thicknesses. Pegmatite intersections that did not meet
at least one of the following metal content cut-off criteria (>0.25%
Li₂O, >0.1% Sn or >99ppm Ta) have not been reported as they are
currently regarded as economically insignificant. Downhole orientation surveys
were conducted at regular intervals for each hole as the drilling was
advancing and surveyed in totality after drilling was completed. The surveys
were conducted using a magnetic deviation probe that collected readings at two
metre intervals whereas collar locations were surveyed using a handheld GPS.
The Stage 1 drill programme was expanded by 18% to 16 525 metres of orientated
diamond core across the license area and was completed in May 2026. (See
announcements dated 5 May and 27 May 2026).

Sampling and Analysis

Individual drill holes were geologically and structurally logged prior to
being cut and sampled as quarter core. The sampling programme followed
geological contacts while simultaneously maintaining consistency in data and
sample representativity. Sample lengths ranged from 25 cm to 125 cm, where
practicable. The samples were submitted to independent and certified
laboratories, namely SA Labs Ithuba for pulverisation and homogenisation, and
the pulps were subsequently dispatched to UIS Analytical Services for chemical
analysis. Lithium and other related major elements were analysed using sodium
peroxide fusion with ICP-OES, while tin, tantalum and other trace elements
were analysed using lithium borate fusion with ICP-MS. No top cut was applied
in calculating the weighted average grades for mineralised intersections
within the pegmatites.

Table 1: Results of the intersected mineralised pegmatites with the intersection depths, lengths and grades reported. Intersections described as 'Including' refer to a portion of the whole pegmatite intersection with significant metal values. The reported intersections are indicative of apparent thickness, which is greater than true thickness.
 Hole ID  Dip Angle (Degrees)  Intersection Type   From - To (metres)  Length (metres)  Grades
          Li₂O (%)                                 Sn (%)                               Ta (ppm)
 LRD023   -45                  Whole Intersection  11.87 - 12.13       0.26             0.02      0.02  237
          Whole Intersection                       19.45 - 20.14       0.69             0.52      0.08  74
          Whole Intersection                       21.14 - 21.54       0.4              0.96      0.12  76
          Whole Intersection                       24.26 - 27.47       3.21             1.37      0.13  81
          Whole Intersection                       31.11 - 32.16       1.05             1.14      0.19  99
          Whole Intersection                       34.41 - 34.71       0.3              0.24      0.36  84
          Whole Intersection                       50.36 - 60.00       9.64             1.24      0.17  89
          Including                                53.58 - 58.69       5.11             1.89      0.08  83
          Whole Intersection                       67.97 - 68.33       0.36             0.34      0.04  73
 LRD024   -60                  Whole Intersection  31.33 - 31.77       0.44             0.05      0.11  111
          Whole Intersection                       32.06 - 45.33       13.27            1.42      0.10  50
          Including                                32.90 - 39.69       6.79             1.90      0.13  50
          Whole Intersection                       45.67 - 46.20       0.53             0.03      0.13  114
          Whole Intersection                       77.38 - 80.31       2.93             0.67      0.13  157
          Whole Intersection                       86.70 - 86.97       0.27             0.31      0.06  95
          Whole Intersection                       96.87 - 102.14      5.27             0.66      0.29  58
          Whole Intersection                       102.41 - 105.20     2.79             0.47      0.09  52
 LRD027   -50                  Whole Intersection  6.29 - 7.43         1.14             0.69      0.86  282
          Whole Intersection                       10.56 - 11.41       0.85             0.68      0.36  115
          Whole Intersection                       12.65 - 13.40       0.75             0.85      0.05  71
          Whole Intersection                       13.76 - 14.04       0.28             1.03      0.02  80
          Whole Intersection                       14.84 - 15.29       0.45             0.23      0.19  88
          Whole Intersection                       38.01 - 39.20       1.19             0.08      0.02  125
          Whole Intersection                       50.82 - 59.87       9.05             2.28      0.14  57
          Including                                51.82 - 55.79       3.97             3.46      0.06  25
          Whole Intersection                       133.86 - 136.00     2.14             0.72      0.02  72
          Whole Intersection                       145.33 - 147.22     1.89             1.42      0.06  16
          Whole Intersection                       155.50 - 155.75     0.25             0.12      0.03  194
          Whole Intersection                       158.58 - 167.39     8.81             0.16      0.17  33
 LRD029   -55                  Whole Intersection  17.75 - 19.20       1.45             0.02      0.33  228
          Whole Intersection                       25.28 - 25.53       0.25             0.03      0.11  156
          Whole Intersection                       72.46 - 77.43       4.97             0.84      0.21  130
 LRD037   -45                  Whole Intersection  19.67 - 22.39       2.72             0.32      0.25  116
          Whole Intersection                       48.78 - 52.75       3.97             0.95      0.03  63
          Including                                51.24 - 52.75       1.51             1.99      0.06  90
          Whole Intersection                       86.00 - 87.74       1.74             0.32      0.40  103
          Whole Intersection                       112.58 - 112.88     0.3              0.02      0.26  68
 LRD039   -50                  Whole Intersection  14.14 - 20.13       5.99             0.29      0.34  114

 

 

Figure 1: Locations of the current and historically completed programmes. The
diamond drill holes from this campaign and the reverse circulation drill holes
(green triangles) completed during the 2023 campaign. The line A-A' represents
the cross section in Figure 2 below.

Figure 2: Section line A-A' displaying a projection of the diamond drill hole,
LRD027, for which results are reported in this announcement. The mineralised
intersections from LRD027 are reported in Table 1

Competent Person statement

The technical data in this announcement has been reviewed by
Professor Laurence Robb ("Prof. Robb"), who is a non-executive director of
Andrada. Prof. Robb has over 30 years industry related exploration and
economic geology experience and is a Competent Person for the reporting of
exploration results. He has reviewed both the technical disclosures in this
release as well as the quality assurance protocols (QA/QC) and results for
this programme. As previously announced, the Company will continue to provide
regular updates as significant results are received and milestones achieved.

Glossary of abbreviations
 %              Symbol for percentage
 DD             Diamond Drill
 ICP-MS         Inductively Coupled Plasma-Mass Spectrometry
 ICP-OES        Inductively Coupled Plasma-Optical Emission Spectrometry
 Li             Symbol for lithium
 Li → Li₂O      Metal to metal-oxide conversion factor of 2.153
 Li₂O           Lithium oxide
 PPM            Parts Per Million
 RC             Reverse Circulation
 QA/QC          Quality Assurance / Quality Control
 Sn             Symbol for tin
 Ta             Symbol for tantalum

Glossary of technical Terms
 Apparent thickness  The relationship between apparent width and true thickness is based on the
                     formula by Addie (1968 Economic Geology, vol 63, pp 188-189).
 Dip angle           The angle of inclination measured downward from horizontal.
 Geological model    The interpretation of mineralisation and geology that controls the shape of
                     the mineralised unit. This is usually generated in a three-dimensional
                     computer environment.
 Pegmatite           An igneous rock typically of granitic composition, which is distinguished from
                     other igneous rocks by the extremely coarse size of its crystals, or by an
                     abundance of crystals with skeletal, graphic, or other strongly directional
                     growth habits, or by a prominent spatial zonation of mineral assemblages.
 Xenolith            A foreign rock fragment (e.g., schist) within an intrusive body (e.g.,
                     pegmatite) that is unrelated to the igneous body.

 

CONTACT
 ANDRADA MINING LIMITED
 Anthony Viljoen, CEO                         +27 (11) 268 6555

 Sakhile Ndlovu, Head of Investor Relations

 NOMINATED ADVISOR & BROKER
 Zeus Capital Limited                         +44 (0) 20 2382 9500

Katy Mitchell

 Andrew de Andrade

 Harry Ansell

 CORPORATE BROKER & ADVISOR
 H&P Advisory Limited                         +44 (0) 20 7907 8500

Andrew Chubb

 Jay Ashfield

 Matt Hasson
 Berenberg                                    +44 (0) 20 3753 3040

Jennifer Lee
 FINANCIAL PUBLIC RELATIONS
 Tavistock (United Kingdom)                   +44 (0) 207 920 3150

Emily Moss

                                            andrada@tavistock.co.uk
 Josephine Clerkin

About Andrada Mining Limited

Andrada Mining Limited, listed on the London Stock Exchange's AIM market, is a
tin producer with a portfolio of critical minerals mining and exploration
assets in Namibia, a premier investment destination in Africa. The Company's
strategy focuses on unlocking Namibia's abundant mineral resources via
best-in-class strategic partnerships across its resource base, enhancing the
country's reputation as a leading global hub for African critical mineral
investment. Andrada is actively scaling up tin production alongside lithium,
tantalum, tungsten and copper, steadily broadening its operational footprint
and output. The Company aims to supply critical raw materials from its
extensive resource portfolio to support a sustainable future, improve quality
of life, and uplift communities near its operations. These critical metals
play a crucial role in the green energy transition, serving as essential
components for electric vehicles, solar panels, and wind turbines.

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact
rns@lseg.com (mailto:rns@lseg.com)
 or visit
www.rns.com (http://www.rns.com/)
.

RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our
Privacy Policy (https://www.lseg.com/privacy-and-cookie-policy)
.   END  DRLFPMPTMTAMBRF



            Copyright 2019 Regulatory News Service, all rights reserved