REG - Andrada Mining Ltd - Lithium Ridge Exploration Update

Andrada MiningAnnouncement

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RNS Number : 2883Q  Andrada Mining Limited  26 January 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 mineralised pegmatites identified at Lithium Ridge as exploration
drilling ADVANCES

Andrada Mining Limited (AIM: ATM, OTCQB: ATMTF) ("Andrada"), a tin producer
with a portfolio of critical minerals mining and exploration assets in
Namibia, is pleased to announce exceptional surface sampling results from
Lithium Ridge ("Lithium Ridge" or the "Project") in partnership with Sociedad
Química y Minera de Chile SA through its subsidiary SQM Australia (Pty) Ltd
("SQM").  The results of the comprehensive geological mapping and grab
sampling across the licence area provide strong validation for the ongoing
Stage 1 drilling programme, funded by SQM under the previously announced
earn-in agreement, to acquire a 30% shareholding.

HIGHLIGHTS

§ Exceptional lithium grades at surface: multiple grab samples returned
grades exceeding 4% Li(2)O, with a peak value of 4.67% Li(2)O

§ Extensive scale of mineralisation: high-grade laboratory results obtained
from diverse pegmatite bodies across the mineralised trend, reinforcing the
scale and footprint of lithium potential

§ Significant polymetallic upside: significant associated tin (Sn) and
tantalum (Ta) mineralisation confirmed, with peak grades of 3.12% Sn and 905
ppm Ta in individual samples

§ Strategic minerals: Primary lithium mineralisation confirmed to be
spodumene, consistent with previous drilling and sampling programmes

Anthony Viljoen, Chief Executive Officer, commented:

"The results from Lithium Ridge represent a very encouraging validation of the
Project's lithium potential. Surface samples returning lithium grades in
excess of 4% Li₂O, together with the confirmation of spodumene as the
primary lithium mineral, reinforces our view that Lithium Ridge hosts a large,
high-quality lithium system. Importantly, the presence of meaningful tin and
tantalum grades alongside the lithium mineralisation highlights the
polymetallic nature of the Project and its capacity to deliver by-product
credits that could enhance future project economics. While expansion
activities at our flagship Uis Mine continue to progress, Lithium Ridge
demonstrates the potentially significant regional upside within Andrada's
broader portfolio. We look forward to receiving the first assay results from
the Lithium Ridge Stage 1 drilling programme, which is advancing on schedule."

Lithium ridge exploration Update

The comprehensive grab sampling was integrated with the geological mapping
programme ("the Programme"), with the objective of identifying mineralised
pegmatites that may have been previously overlooked. Evaluation of the
recently identified pegmatites will continue as part of the Stage 1 drill
programme which commenced in Q3 CY2025. The Programme systematically covered
the entire licence area resulting in more than 1 500 outcropping pegmatites
being mapped. Essentially, visual identification of lithium-bearing minerals,
coupled with Raman spectroscopy validation, has identified:

§ Multiple new lithium bearing pegmatites along the Lithium Ridge trendline,
increasing the width of the 6km long mineralised zone.

§ Additional lithium mineralisation within pegmatites across other parts of
the licence area, indicating the potential for a significantly larger mineral
system.

Of the 496 grab sample results received to date, as illustrated in Figure 1,
the twenty highest lithium grades are reported in Table 1, with selected tin
and tantalum samples reported in Table 2. Of these grab sample results, 115
reported grades above 1% Li(2)O (including 83 samples above 2% Li(2)O), 156
samples reported grades above 0.1% Sn (Figure 2), and 165 samples reported
grades above 75 ppm Ta, highlighting the by-product potential of the licence
area.

Table 1: Selected twenty highest grade grab sample results for lithium
(Coordinate system: UTM33 South)

 Sample Number  Northing  Easting  Li(2)O (%)  Sn (%)  Ta (ppm)
 NN07145        508267    7629054  4.67        0.05    26
 NN07409        509141    7629482  4.57        0.00    3
 NN07350        509246    7629754  4.47        0.02    15
 NN07258        509020    7629399  4.40        0.00    10
 NN07347        509136    7629650  4.40        0.03    37
 NN07256        508919    7629341  4.37        0.03    12
 NN07017        507575    7628438  4.26        0.00    8
 NN07452        510722    7630719  4.25        0.04    13
 NN07146        508286    7629063  4.24        0.04    22
 NN07456        510924    7630865  4.17        0.08    70
 NN07255        508878    7629315  4.13        0.03    6
 NN07014        507475    7628435  4.11        0.02    98
 NN07353        509170    7629705  4.10        0.05    36
 NN07343        509064    7629609  4.07        0.04    27
 NN07348        509187    7629678  4.06        0.02    12
 NN07433        510420    7630561  4.05        0.02    28
 NN07016        507478    7628376  4.03        0.00    8
 NN07351        509211    7629733  3.99        0.04    57
 NN07023        507678    7628772  3.94        0.04    15
 NN07021        507713    7628794  3.93        0.04    24

 

 

Table 2: Selected high-grade tin and tantalum grab samples (Coordinate system:
UTM33 South).

 Sample Number  Northing  Easting  Li(2)O (%)  Sn (%)  Ta (ppm)
 NN07411        509123    7629406  0.02        3.12    514
 NN07003        507325    7628415  0.03        1.53    225
 NN07053        508209    7628628  0.05        1.34    425
 NN07177        508545    7628731  0.01        1.25    275
 NN07337        509825    7629740  0.01        1.05    130
 NN07096        506779    7628461  0.03        1.02    238
 NN07227        507180    7628555  0.03        0.91    562
 NN07010        507361    7628501  0.49        0.68    106
 NN07280        508703    7629152  1.38        0.58    50
 NN07455        510891    7630869  1.54        0.58    100
 NN07132        507179    7629180  0.26        0.04    905
 NN07199        509458    7629867  0.21        0.24    895
 NN07230        507098    7628853  0.62        0.14    684
 NN07129        506810    7629325  0.02        0.09    657
 NN07241        508765    7629440  0.01        0.08    558

The grab samples were collected by qualified mapping teams with the location
of each sample recorded using handheld GPS devices. Samples were submitted in
their entirety to SA Labs Ithuba for pulverisation and homogenisation, with
the pulps subsequently dispatched to UIS Analytical Services for geochemical
analysis. Both contractors are certified, independent laboratories. A sodium
peroxide fusion coupled with ICP-OES analysis was used to determine Li and
other major element concentrations, while lithium borate fusion with ICP-MS
analysis was performed to determine Sn, Ta and other minor or trace element
concentrations. Internal laboratory Quality Assurance and Quality Control
(QA/QC) standards were reported to Andrada, these controls were found to be
compliant and suitable for the grab samples.

The geochemical results are being systematically integrated with mapping
results to enhance the understanding of the mineralising system, and to define
additional drill targets. Visual and handheld Raman spectroscopy
identification of spodumene and other lithium ore minerals indicates that
lithium mineralisation extends substantially beyond the areas initially
targeted, supporting the interpretation of a significantly larger mineral
system. The geochemical results confirm ore-grade potential of numerous
pegmatites not previously drilled or sampled (Figure 1), while also
demonstrating that many pegmatites host significant tin and tantalum
mineralisation alongside the high Li(2)O grades (Figure 2). All grab samples
were exclusively collected from the pegmatites; no samples of the surrounding
schist have been analysed.

 Figure 1: Li(2)O grades in grab samples reported to date, with visually
identified lithium ore minerals at mapping sites on Lithium Ridge

 

Figure 2: Sn grades in grab samples reported to date on Lithium Ridge

The Stage 1 drill programme is progressing on schedule with a third drill
diamond rig having been mobilised to site in November 2025. The programme has
been designed to comprise 14 000 metres of orientated core drilling across
approximately 120 drill holes to determine the depth extent and continuity of
the pegmatites along strike. The programme will test the previously known and
recently discovered mineralised pegmatites within the Lithium Ridge licence
area. The Company will provide regular updates as significant results are
received and milestones achieved.

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.

Glossary of abbreviations

 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
 QA/QC               Quality Assurance / Quality Control
 Q3 CY2025           Third quarter of the 2025 calendar year
 Raman Spectroscopy  Raman spectroscopy is a non-destructive, in situ technique to determine the
                     mineralogical composition, polymorphs, crystallinity, and mineral chemistry of
                     rocks, ores, and inclusions by analysing the Raman scattering (inelastic
                     scattering) of laser light caused by vibrational modes within mineral crystal
                     lattices.
 Sn                  Symbol for Tin
 Ta                  Symbol for Tantalum

 

 

 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.

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