ANDRADA MINING LIMITED

Regulatory Filings • Aug 29, 2023

National Storage Mechanism | Additional information

RNS Number : 6380K

Andrada Mining Limited

29 August 2023

29 August 2023

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")

Exploration Update on ML133 ("Lithium Ridge")

Results of infill channel sampling confirm lithium mineralisation and define mineralised zone.

Andrada Mining Limited (AIM: ATM, OTCQB: ATMTF), an African technology metals mining company with a portfolio of mining and exploration assets in Namibia, is pleased to provide lithium assay results for a channel sampling and geological mapping programme undertaken within the ML133 mining license area ("Lithium Ridge") located approximately 35km southeast of the Uis mine.

The exploration programme aimed to fill in data gaps between known lithium occurrences within our existing mining licence ML133 and define the width and length of the mineralised trend. A detailed geological mapping programme was also undertaken to delineate the extent of the pegmatites at surface and to document the mineral characteristics of the intrusions in preparation for a more detailed follow up programme.

HIGHLIGHTS

§ When combined, the weighted average of the 27 highest lithium grade channel lines amount to 179 m at 1.20% Li2O (Refer to Table 1).

§ Notable results for channel samples across the entire pegmatite include:

o  9.65 m with an average grade of 2.18% Li2O, 0.18% Sn and 89 ppm Ta

o  12.76 m with an average grade of 1.87% Li2O, 0.15% Sn and 61 ppm Ta

o  15.29 m with an average grade of 1.60% Li2O, 0.18% Sn and 57 ppm Ta

o  4.50 m with an average grade of 1.54% Li2O, 0.11% Sn and 61 ppm Ta

o  10.01 m with an average grade of 1.35% Li2O, 0.08% Sn and 41 ppm Ta

o  11.73 m with an average grade of 1.32% Li2O, 0.18% Sn and 99 ppm Ta

§ This data confirms the existence of continuous mineralisation at surface over a 6 km strike length.

§ The primary lithium minerals identified are spodumene and petalite.

§ First saleable grade of Lithium from the licence produced in May 2023.

Anthony Viljoen, Chief Executive Officer, commented:

"I am very encouraged by results received to date from the regional exploration programme, highlighting the potential upside of our mining licence portfolio. Lithium mineralisation has to date, now been identified within the pegmatites in all our mining licences. In several cases, Andrada has been at the forefront of identifying and reporting the presence of significant lithium concentrations within these pegmatite swarms in the region. The channel sampling results confirm the continuity of notable lithium, tin, and tantalum mineralisation over a significant strike length.

These results, together with and the bulk test work programme at the newly constructed Pilot facility, will allow the Andrada team to expedite the concurrent development of the Lithium Ridge licence.

We look forward to receiving the results of the initial RC drill programme which was implemented to investigate the continuity of Lithium Ridge's pegmatites and their associated mineralisation at depth. This work continues to confirm our belief that the geology of the Erongo region, plays host to a burgeoning critical metals province in Namibia. As we increase and diversify production at Uis, we are also striving to discover and define additional tech-metals resources with the potential to develop into standalone operations."

Project Location

This report relates to an exploration programme implemented within the ML133 mining license, situated approximately 35km south-east of the Uis Mine along the D1903 road that links to the B2 connecting Windhoek and Swakopmund. The license area is within the NaiNais - Kohero pegmatite belt and where the former tin and tantalum-rich TinTan mine was situated.     

Overview of results

This exploration programme comprised 129 separate channel lines which were cut over 99 individual pegmatites. The programme was undertaken in conjunction with detailed geological mapping of the pegmatites in the areas between existing datasets obtained in 2022.  

The results of this infill channel sampling programme reveal a 6km long trend following a ridgeline where pegmatites contain elevated lithium values. To better define the width of this trend, the outcropping pegmatites on either side of the described bodies were also sampled (Refer to Appendix A for the entire dataset) and they reveal a well-defined area with enriched lithium values. These results also demonstrate that, while lithium, tin and tantalum enrichments all occur together in this area, there are other areas where they occur separately. The weighted average grade of the sample lines selected for this report indicates the presence of mineralised pegmatite over an interval of 179m, at a value of 1.20% Li2O.

In conjunction, a Reverse Circulation ("RC") drilling programme was initiated in the first quarter of this calendar year within the same area, to investigate the continuation and mineralisation of selected pegmatites below surface. All drill holes successfully intersected pegmatites at depth providing valuable information about the potential morphology of these intrusions and have been sampled for chemical analysis. The first batch of results from the drill programme are imminent, following which Andrada will implement additional drill programmes to prove continuity along strike and to investigate extensions at depth.

Some of the lower grade composites may incorporate higher-grade samples and, as a result, additional investigations will be undertaken to enhance our understanding of the data obtained by this sampling programme. The primary lithium-bearing minerals identified during this programme were petalite and spodumene, in some instances both these minerals were found to occur within the same pegmatite unit. 

Table 1: Selected results from the chip sampling programme on mining license ML133. The entire dataset is in Appendix A.

Sample Line	Pegmatite	Length (m)	Grade
Li20 (%)	Sn (%)	Ta (ppm)
T018	P154	9.65	2.18	0.18	89
T083A	P193	12.67	1.87	0.15	61
T084	P163	15.29	1.60	0.18	57
T055A	P193	4.50	1.54	0.11	89
T085	P163	4.00	1.50	0.21	81
T020	P4b	6.30	1.38	0.08	41
T029	P182	10.01	1.35	0.08	41
T016	P2	3.95	1.33	0.11	112
T088	P158	11.73	1.32	0.18	99
T093C	P45	2.00	1.26	0.26	96
T083B	P193	3.75	1.21	0.30	76
T086	P158	3.85	1.21	0.15	73
T058D	P240	2.01	1.20	0.40	85
T013	P2	4.78	1.19	0.13	123
T031	P194	5.63	1.13	0.21	90
T010	P247	3.34	1.11	0.06	189
T055C	P218	4.85	0.97	0.17	99
T093A	P45	16.68	0.88	0.19	60
T02B	P34	7.50	0.87	0.14	75
T025	P168	3.24	0.85	0.25	150
T058C	P240	1.63	0.77	0.23	109
T009	P138	2.39	0.74	0.10	60
T061	P22	15.00	0.73	0.06	67
T058A	P240	2.87	0.72	0.81	115
T012	P1	2.92	0.71	0.19	101
T092	P43	15.00	0.70	0.13	106
T008	P253	3.50	0.69	0.09	58
Total:		179.04	1.20	0.16	81

For this exploration programme, 692 individual samples derived from 129 channels were acquired, and included nine grab samples. Wherever possible each channel sample was taken to reflect a one metre horizontal interval within the pegmatite body. Where xenoliths of the host rock occur, these units were sampled individually. Each channel was cut with a diamond saw and chiselled free, to be collected in individual sample bags, with a minimum of 20 kg of material obtained for each sample. The samples were processed and then analysed for their elemental content by ICP-MS and ICP-OES methods at UIS Analytical Services, a certified independent laboratory in South Africa.

The sample points were surveyed with a differential GPS, yielding a 4cm accuracy in the horizontal plane and 8cm in the vertical plane. The GPS data were used to validate the length intervals recorded for each sample.

Figure 1: The distribution of identified pegmatite bodies on ML133 overlain on a satellite image.

Figure 2: Weighted average lithium grades at ML133 for pegmatites mapped and sampled during the 2022 and 2023 exploration programmes. The mineralized ridge line is demarcated by samples with the multi-coloured points.  

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 Mining. Prof. Robb has over 30 years of industry related exploration and mineral 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 and results for this programme.

Glossary of abbreviations

GPS	Global Positioning System
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
Sn	Symbol for Tin
Ta	Symbol for Tantalum

Andrada Mining Limited Anthony Viljoen, CEO Sakhile Ndlovu, Investor Relations	+27 (11) 268 6555 investorrelations@andradamining.com
Nominated Adviser
WH Ireland Limited Katy Mitchell	+44 (0) 207 220 1666
Corporate Adviser and Joint Broker
H&P Advisory Limited Andrew Chubb Jay Ashfield Matt Hasson	+44 (0) 20 7907 8500
Stifel Nicolaus Europe Limited Ashton Clanfield Calum Stewart Varun Talwar	+44 (0) 20 7710 7600
Tavistock Financial PR (United Kingdom) Jos Simson Catherine Drummond Adam Baynes	+44 (0) 207 920 3150 andrada@tavistock.co.uk

__________________________________________________________________________________

About Andrada Mining Limited

Andrada Mining Limited, formerly Afritin Mining Limited, is a London-listed technology metals mining company with a vision to create a portfolio of globally significant, conflict-free, production and exploration assets. The Company's flagship asset is the Uis Mine in Namibia, formerly the world's largest hard-rock open cast tin mine.

An exploration drilling programme is currently underway with the aim of expanding the tin resource over the fourteen additional, historically mined pegmatites, all of which occur within a 5 km radius of the current processing plant. The Company has set a mineral resource target of 200 Mt to be delineated within the next 5 years. The existing mine, together with substantial mineral resource potential, allows the Company to consider economies of scale.

Andrada is managed by a board of directors with extensive industry knowledge and a management team with extensive commercial and technical skills. Furthermore, the Company is committed to the sustainable development of its operations and the growth of its business. This is demonstrated by the manner in which the leadership team places significant emphasis on creating value for the wider community, investors, and other key stakeholders. Andrada has established an environmental, social and governance system which has been implemented at all levels of the Company and aligns with international standards. [END]

Appendix 1

Table 2: Channel sample results from the exploration programme to date. The values represent the weighted average of the pegmatite intersections indicated. Where country rock xenoliths were intersected the lower values were included in the calculations.

Sample Line	Pegmatite	Length (m)	Grade
Li20 (%)	Sn (%)	Ta (ppm)
T001	P248	9.40	0.04	0.01	27
T002	P24	10.73	0.05	0.03	48
T003	P248b	3.55	0.04	0.03	34
T004	P249	6.50	0.03	0.02	37
T005	P250	15.95	0.04	0.01	16
T006	P251	3.00	0.14	0.17	95
T007	P252	2.43	0.26	0.35	151
T008	P253	3.50	0.69	0.09	58
T009	P138	2.39	0.74	0.10	60
T010	P247	3.34	1.11	0.06	189
T011	P254	0.80	0.01	0.29	82
T012	P1	2.92	0.71	0.19	101
T013	P2	4.78	1.19	0.13	123
T014A	P154a	7.18	0.17	0.16	63
T014B	P154b	2.59	0.11	0.16	90
T014C	P154	1.47	0.06	0.07	107
T015	P3	19.28	0.05	0.02	19
T016	P2	3.95	1.33	0.11	112
T017	P2	2.00	0.09	0.06	146
T018	P154	9.65	2.18	0.18	89
T019	P4a	8.00	0.61	0.07	99
T020	P4b	6.30	1.38	0.08	41
T021	P5	1.26	0.24	0.24	265
T022	P6	5.47	0.11	0.10	61
T023	P7	1.74	0.20	0.07	173
T024	P7b	2.90	0.10	0.02	24
T025	P168	3.24	0.85	0.25	150
T026	P178	2.00	0.02	0.01	11
T027	P169	3.98	0.44	0.43	154
T028	P170	3.66	0.56	0.39	89
T029	P182	10.01	1.35	0.08	41
T02B	P34	7.50	0.87	0.14	75
T02C	P34	5.00	0.18	0.10	86
T030	P8	1.65	0.01	0.14	131
T031	P194	5.63	1.13	0.21	90
T032	P182	1.72	0.10	0.12	117
T032A	P182	3.00	0.09	0.14	73
T033	P9	0.72	0.02	0.03	40
Sample Line	Pegmatite	Length (m)	Grade
Li20 (%)	Sn (%)	Ta (ppm)
T034	P181	7.28	0.04	0.01	19
T035	P181	1.00	0.02	0.01	13
T036	P184	3.54	0.02	0.02	25
T037	P180	5.21	0.03	0.01	25
T038	P10	5.40	0.01	0.01	250
T039	P11	1.40	0.00	0.00	8
T040	P12	1.41	0.00	0.01	6
T041	P13	0.82	0.00	0.01	11
T042	P14	1.90	0.01	0.00	10
T043	P15	1.90	0.00	0.00	6
T044	P16	10.00	0.01	0.00	4
T045	P17	3.60	0.00	0.00	3
T047	P18	5.60	0.00	0.01	6
T054	P204	4.00	0.02	0.02	31
T055A	P193	4.50	1.54	0.11	89
T055B	P214	1.82	0.60	0.53	116
T055C	P218	4.85	0.97	0.17	99
T055D	P218	4.61	0.30	0.12	197
T056	P19	3.77	0.07	0.01	24
T057	P20	1.30	0.11	0.19	61
T058A	P240	2.87	0.72	0.81	115
T058B	P240	1.56	0.61	0.15	65
T058C	P240	1.63	0.77	0.23	109
T058D	P240	2.01	1.20	0.40	85
T059	P241	4.00	0.07	0.02	21
T060	P21	7.76	0.03	0.02	59
T061	P22	15.00	0.73	0.06	67
T063	P24	4.00	0.01	0.03	50
T064	P23	2.54	0.00	0.01	8
T065A	P25	1.26	0.00	0.01	14
T065B	P26	2.00	0.00	0.01	34
T066	P27	4.38	0.00	0.01	22
T067	P28	3.80	0.02	0.01	38
T068	P29	3.00	0.02	0.01	82
T068B	P30	13.30	0.01	0.01	41
T069	P31	3.00	0.03	0.02	40
T070	P32	8.11	0.32	0.14	75
T071	P33	1.00	0.29	0.19	175
T072A	P35	9.70	0.06	0.02	54
T073	P36	4.55	0.04	0.02	55
T076	P39	5.36	0.02	0.00	33
T076B	P40	4.94	0.01	0.01	34
T078	P232	2.00	0.02	0.06	29
T079	P231	4.80	0.10	0.14	51
T080	P219	9.00	0.01	0.01	24
Sample Line	Pegmatite	Length (m)	Grade
Li20 (%)	Sn (%)	Ta (ppm)
T081A	P41	14.70	0.02	0.01	14
T081B	P41	2.00	0.02	0.01	21
T082	P42	5.40	0.01	0.01	10
T083A	P193	12.67	1.87	0.15	61
T083B	P193	3.75	1.21	0.30	76
T084	P163	15.29	1.60	0.18	57
T085	P163	4.00	1.50	0.21	81
T086	P158	3.85	1.21	0.15	73
T087	P160	3.93	0.42	0.11	145
T088	P158	11.73	1.32	0.18	99
T089	P46	2.00	0.22	0.05	61
T090	P47	2.57	0.29	0.08	136
T091	P48	1.22	0.04	0.15	166
T092	P43	15.00	0.70	0.13	106
T092A	P57	1.47	0.33	0.12	158
T092B	P43	2.40	0.31	0.13	151
T093A	P45	16.68	0.88	0.19	60
T093B	P45	1.91	0.38	0.17	73
T093C	P45	2.00	1.26	0.26	96
T094	P54	2.58	0.52	0.13	138
T095	P55	2.33	0.07	0.15	113
T095B	P56	2.40	0.04	0.02	29
T095C	P58	1.34	0.01	0.08	48
T096	P59	0.71	0.01	0.08	69
T097	P60	1.00	0.00	0.03	55
T098	P61	2.00	0.01	0.08	37
T099	P62	1.63	0.20	0.15	103
T100	P63	1.34	0.02	0.14	43
T101	P64	1.90	0.04	0.03	30
T102	P240	3.95	0.14	0.13	161
T103	P65	1.50	0.00	0.10	159
T104	P35	1.50	0.02	0.03	39
T105	P32	2.60	0.11	0.20	89
T106	P241	3.90	0.07	0.10	108
T107	P43	6.42	0.02	0.01	51
T108A	P42	1.71	0.01	0.01	11
T108B	P42	3.00	0.02	0.01	16
T109	P44	4.00	0.01	0.00	10
T111	P210	5.83	0.02	0.01	21
T112	P24	3.00	0.06	0.03	41
T113	P27	6.93	0.50	0.12	51
T114	P66	2.25	0.01	0.06	33
T115	P67	3.44	0.58	0.23	195
T201	P68	2.70	0.41	0.52	192
T202A	P243	6.00	0.19	0.20	83
Sample Line	Pegmatite	Length (m)	Grade
Li20 (%)	Sn (%)	Ta (ppm)
T202B	P243	2.90	0.08	0.20	58
Grab Sample 1			3.92	0.01	83
Grab Sample 2			0.30	0.18	1476
Grab Sample 3			0.21	0.14	209
Grab sample 4			0.05	0.03	77
Grab Sample 5			1.88	0.19	2676
Grab Sample 6			0.03	0.00	56
Grab Sample 7			1.37	0.08	197
Grab Sample 8			0.11	0.11	3008
Grab Sample 9			0.09	0.09	1871

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