TIDMATM
RNS Number : 4250H
AfriTin Mining Ltd
24 November 2022
24 November 2022
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 is now
considered to be in the public domain.
AfriTin Mining Limited
("AfriTin" or the "Company")
Regional Exploration Update - Lithium, Tin and Tantalum
Significant Mineralisation Potential at Surface, 35 km from
Flagship Uis Mine
AfriTin Mining Limited (AIM: ATM), an African technology metals
mining company with a portfolio of mining and exploration assets in
Namibia, is pleased to provide an update on the exploration
activities undertaken over its mining licence ML133, located
approximately 35 km south-east of the Company's Uis Mine.
The exploration programme has been conducted over a 12-month
period commencing in Q4 2021, and included aerial surveys, regional
and high-resolution geological mapping, and surface chip sampling.
The programme targeted outcropping pegmatites, many of which were
found to contain lithium, tin, and tantalum.
Highlights:
-- More than 100 pegmatites were outlined by detailed geological
mapping over the licence areas of approximately 3,200 hectares;
-- Sampling consisted of 79 pegmatite chip sample profiles over 64 selected pegmatites;
-- Chip sample results, sampled across the width of selected
pegmatites on a 1m interval, included:
o 13 m at 1.93 % Li(2) O, 0.10% Sn, and 36 ppm Ta from sample
line T78;
o 24 m at 1.65% Li(2) O, 0.15% Sn, and 52 ppm Ta from sample
line T72;
o 20 m at 0.97 % Li(2) O, 0.12% Sn, and 172 ppm Ta from sample
line T36;
o 14 m at 1.33 % Li(2) O, 0.17% Sn, and 118 ppm Ta from sample
line T71;
o 11 m at 0.93 % Li(2) O, 0.17% Sn, and 149 ppm Ta from sample
line T24;
o 4 m at 2.44 % Li(2) O, 0.07% Sn, and 43 ppm Ta for sample line
T76;
-- The weighted average of the 20 highest lithium grade sample
lines combined provides 200 m at 1.25% Li(2) O (composite of Table
1); and
-- The Company intends to proceed with the next phase of
exploration, including scout drilling, and initial metallurgical
test work.
Anthony Viljoen (CEO) commented:
"We are especially excited about these initial exploration
results. It confirms our belief that the pegmatites of the ML133
licence could contain significant lithium, tin and tantalum
mineralisation. We intend to advance the next stage of our work
programme over this area, including exploration drilling and
initial metallurgical test work.
Proximity of the test area to the Uis Mine, which is our
operating facility with comparable types of mineralisation,
presents potential development synergies.
AfriTin's portfolio of operating and exploration assets in
Namibia underpins our goal of becoming a major producer of
technology metals. We believe the prospectivity of our tenements
justify accelerating the exploration and development programmes
aimed at realising near-term value for our stakeholders."
Locality
AfriTin's mineral licence ML133 is located approximately 35 km
south-east of the Uis Mine (Figure 1). It can be accessed by road
from the Uis Mine, and is also connected to the port of Walvis Bay
to the south-west. It is the site of the historical Tin Tan Mine
which produced tin and tantalum during the late 1980's.
Figure 1 : AfriTin's Uis Mine and mineral licence locality map
showing the position of ML133
Exploration Programme
Following an extensive desktop study, an exploration programme
was launched over ML133, which included remote sensing to produce
regional geological maps using high-resolution (5cm) imagery over
the priority target area, followed by detailed on-site mapping of
selected areas. Chip samples were taken over selected pegmatites
and analysed for lithium, tin, and tantalum. The sample profiles
were orientated perpendicular to strike, with each sample being
composited over the length of one meter. The pegmatites were
chipped with the utilisation of a rock breaker, and the liberated
material was then collected in a sample bag until 15-25 kg of
material had been obtained. The samples were then processed and
analysed for their trace element content by ICP-MS methods at an
independent ALS laboratory.
This programme identified numerous pegmatites with notable
indications of lithium, tin and tantalum mineralisation. The values
in Table 1 represent the average grade over the length of the
entire sample line. The weighted average of the sample lines in
Table 1 combined (composite of the values) provides 200 m at 1.25%
Li2O.
Table 1 : Selected results from the chip sampling programme on
mining license ML133. The entire dataset is in Appendix A.
Sample Pegmatite Length Li(2) Sn (%) Ta (ppm)
Line (m) O (%)
T24 P51 11 0.93 0.17 149
----------- ------- ------- ------- ---------
T27 P45 22 0.78 0.18 53
----------- ------- ------- ------- ---------
T29 P45 2 2.89 0.06 24
----------- ------- ------- ------- ---------
T31 P43 13 1.05 0.14 65
----------- ------- ------- ------- ---------
T36 P63 20 0.97 0.12 172
----------- ------- ------- ------- ---------
T39 P68 5 1.20 0.16 60
----------- ------- ------- ------- ---------
T62 P246 9 1.56 0.09 48
----------- ------- ------- ------- ---------
T68 P154 6 1.37 0.10 163
----------- ------- ------- ------- ---------
T70 P155 10 1.20 0.14 54
----------- ------- ------- ------- ---------
T71 P158 14 1.33 0.17 118
----------- ------- ------- ------- ---------
T72 P163 24 1.65 0.15 52
----------- ------- ------- ------- ---------
T73 P163 15 1.21 0.13 53
----------- ------- ------- ------- ---------
T74 P163 3 0.86 0.07 136
----------- ------- ------- ------- ---------
T75 P186 3 1.14 0.18 85
----------- ------- ------- ------- ---------
T76 P188 4 2.44 0.07 43
----------- ------- ------- ------- ---------
T77 P193 14 1.24 0.12 38
----------- ------- ------- ------- ---------
T78 P193 13 1.93 0.10 36
----------- ------- ------- ------- ---------
T79 P197 6 0.81 0.08 111
----------- ------- ------- ------- ---------
T83 P229 6 0.85 0.18 119
----------- ------- ------- ------- ---------
The exploration programme extracted 704 samples, each
representing a one-meter interval along the surface and obtained
from the 79 sample lines completed during this programme. The
detailed mapping and sampling programme was designed to evaluate
the variability of the pegmatite occurrences within the area. The
results show that tin, lithium, and tantalum mineralisation occur
together in some areas, but separately in others.
The ore minerals for tin and tantalum within the project area
appear to be cassiterite and columbite-group minerals respectively.
A follow-up site visit was undertaken to those sample areas with
enhanced lithium grades. Grab samples taken during this visit
indicate that the main lithium bearing mineral is petalite, with
lesser occurences of spodumene and lepidolite.
Future Work
Continued geological mapping and sampling is planned for the
mineralisation trends within the license area, and an initial focus
will be the mapped area north of the historical Tin Tan mine since
this zone appears to be preferentially enriched in lithium. These
mineralised pegmatites generally strike in a northeast-southwest
direction with a near vertical dip. In addition, a scout
exploration drilling programme is planned, with the aim to
characterise the nature of these intrusions at depth.
In addition, the Company has initiated metallurgical test work
on selected mineralised bulk samples from historical mining rock
dumps to determine the beneficiation characteristics of the
material. The initial test work is designed as pilot scale dense
medium separation tests.
The results of the exploration programme and test work will
inform the Company's development strategy for ML133.
Competent Person
The technical data in this announcement has been reviewed by
Laurence Robb, a Non-Executive Director of AfriTin. Laurence Robb
(BScHons, MSc, PhD, FGS, FGSSA, FRSSA) has more than 40 years of
industry-related mineral project development experience. He is
registered as a Professional Natural Scientist with The South
African Council for Natural Scientific Professions, and Chartered
Geologist with the Geological Society of London. He was Professor
of Economic Geology and Director of the Economic Geology Research
Institute in the University of the Witwatersrand's School of
Geosciences. He is currently based at Oxford University as a
Visiting Professor. He has reviewed the technical disclosures in
this release and consents to the release of the information
contained herein.
Glossary of abbreviations
ICP-MS Inductively Coupled Plasma-Mass Spectrometry (Super Trace DL Na2O2)
km Kilometre
--------------------------------------------------------------------
Li Symbol for Lithium
--------------------------------------------------------------------
Li -> Li (2) O Metal to metal-oxide conversion factor of 2.153
--------------------------------------------------------------------
Li (2) O Lithium oxide
--------------------------------------------------------------------
m Metre
--------------------------------------------------------------------
PPM Parts Per Million
--------------------------------------------------------------------
Sn Symbol for Tin
--------------------------------------------------------------------
Ta Symbol for Tantalum
--------------------------------------------------------------------
Glossary of Technical Terms
Dense Medium Separation An ore beneficiation method in which minerals of relatively high or low specific gravity
are
separated from gangue using a hydrocyclone and a dense medium.
Pegmatite An igneous rock typically of granitic composition, which is distinguished from other
igneous
rocks by the extremely coarse and systematically variable 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, including monomineralic zones
--------------------------------------------------------------------------------------------
AfriTin Mining Limited +27 (11) 268 6555
Anthony Viljoen, CEO
Nominated Adviser +44 (0) 207 220 1666
WH Ireland Limited
Katy Mitchell
Andrew de Andrade
Corporate Advisor and Joint Broker
H&P Advisory Limited
Andrew Chubb
Jay Ashfield
Nilesh Patel +44 (0) 20 7907 8500
Stifel Nicolaus Europe Limited
Ashton Clanfield
Callum Stewart
Varun Talwar +44 (0) 20 7710 7600
Tavistock Financial PR (United
Kingdom) +44 (0) 207 920 3150
Emily Moss
Catherine Drummond
Adam Baynes
About AfriTin Mining Limited
Notes to Editors
AfriTin Mining Limited is a London-listed technology metals
mining company with a vision to create a portfolio of globally
significant, conflict-free, producing and exploration assets. The
Company's flagship asset is the Uis Tin Mine in Namibia, formerly
the world's largest hard-rock open cast tin mine.
AfriTin is managed by an experienced board of directors and
management team with a current strategy to ramp-up production at
the Uis Mine in Namibia to more than 10,000 tonnes of tin
concentrate and 350,000 tonnes of lithium concentrate in a Phase 2
expansion, having reached Phase 1 commercial production in 2020.
The Company strives to capitalise on the solid supply/demand
fundamentals of tin and lithium by developing a critical mass of
resource inventory, achieving production in the near term and
further scaling production by consolidating assets in Africa.
Appendix A: Results for all the sampling lines, the results
represent the average grade of each element over the sampled length
of the line.
Sample Pegmatite Length (m) Li(2) Sn (%) Ta (ppm)
Line O (%)
T01 P5 5 0.35 0.05 26
------------- ----------- ------- ------- ---------
T02 P21 24 0.02 0.03 14
------------- ----------- ------- ------- ---------
T03 P248 1 0.01 0.03 68
------------- ----------- ------- ------- ---------
T04 P14 38 0.04 0.03 24
------------- ----------- ------- ------- ---------
T05 P16 14 0.04 0.02 16
------------- ----------- ------- ------- ---------
T06 P13 2 0.01 0.07 153
------------- ----------- ------- ------- ---------
T07 Grab Sample 1 0.08 0.54 486
------------- ----------- ------- ------- ---------
T08 P1 2 0.03 0.08 72
------------- ----------- ------- ------- ---------
T09 P2 20 0.07 0.23 72
------------- ----------- ------- ------- ---------
T10 P24 4 0.03 0.03 39
------------- ----------- ------- ------- ---------
T11 P25 5 0.06 0.12 42
------------- ----------- ------- ------- ---------
T12 P28 2 0.05 0.04 57
------------- ----------- ------- ------- ---------
T13 P27 5 0.11 0.05 51
------------- ----------- ------- ------- ---------
T14 P32 4 0.22 0.26 180
------------- ----------- ------- ------- ---------
T15 P29 2 0.09 0.04 32
------------- ----------- ------- ------- ---------
T16 P30 12 0.28 0.16 56
------------- ----------- ------- ------- ---------
T17 P33 2 0.09 0.18 77
------------- ----------- ------- ------- ---------
T18 P33 2 0.24 0.28 108
------------- ----------- ------- ------- ---------
T19 P39 4 0.64 0.24 99
------------- ----------- ------- ------- ---------
T20 P43 11 0.53 0.16 145
------------- ----------- ------- ------- ---------
T21 P38 1 0.01 0.21 64
------------- ----------- ------- ------- ---------
T22 P60 5 0.13 0.20 93
------------- ----------- ------- ------- ---------
T23 P51 5 0.66 0.10 157
------------- ----------- ------- ------- ---------
T24 P51 11 0.93 0.17 149
------------- ----------- ------- ------- ---------
T25 P54 4 0.48 0.11 119
------------- ----------- ------- ------- ---------
T26 P48 4 0.35 0.27 82
------------- ----------- ------- ------- ---------
T27 P45 22 0.78 0.18 53
------------- ----------- ------- ------- ---------
T28 P47 5 0.33 0.15 84
------------- ----------- ------- ------- ---------
T29 P45 2 2.89 0.06 24
------------- ----------- ------- ------- ---------
T30 P50 5 0.32 0.04 125
------------- ----------- ------- ------- ---------
T31 P43 13 1.05 0.14 65
------------- ----------- ------- ------- ---------
T32 P56 3 0.17 0.48 98
------------- ----------- ------- ------- ---------
T33 P57 1 0.11 0.24 121
------------- ----------- ------- ------- ---------
T34 P43 6 0.09 0.08 220
------------- ----------- ------- ------- ---------
T35 P57 2 0.34 0.10 23
------------- ----------- ------- ------- ---------
T36 P63 20 0.97 0.12 172
------------- ----------- ------- ------- ---------
T37 P72 3 0.03 0.02 16
------------- ----------- ------- ------- ---------
T38 P64 18 0.27 0.04 57
------------- ----------- ------- ------- ---------
T39 P68 5 1.20 0.16 60
------------- ----------- ------- ------- ---------
T40 P72 1 0.03 0.02 21
------------- ----------- ------- ------- ---------
T41 P77 11 0.04 0.03 31
------------- ----------- ------- ------- ---------
T42 P88 14 0.02 0.15 66
------------- ----------- ------- ------- ---------
Trench Pegmatite Length (m) Li(2) Sn (%) Ta (ppm)
O (%)
------------- ----------- ------- ------- ---------
T43 P86 1 0.05 0.02 13
------------- ----------- ------- ------- ---------
T44 P86 1 0.05 0.01 15
------------- ----------- ------- ------- ---------
T45 P88 9 0.06 0.05 32
------------- ----------- ------- ------- ---------
T46 P104 3 0.01 0.15 60
------------- ----------- ------- ------- ---------
T47 P111 12 0.08 0.05 23
------------- ----------- ------- ------- ---------
T48 P100 9 0.03 0.04 20
------------- ----------- ------- ------- ---------
T49 P93 7 0.01 0.35 72
------------- ----------- ------- ------- ---------
T50 P98 5 0.03 0.09 111
------------- ----------- ------- ------- ---------
T51 P102 13 0.05 0.06 22
------------- ----------- ------- ------- ---------
T52 P114 23 0.06 0.01 27
------------- ----------- ------- ------- ---------
T53 P88 20 0.02 0.01 9
------------- ----------- ------- ------- ---------
T54 P88 32 0.04 0.01 19
------------- ----------- ------- ------- ---------
T55 P88 22 0.02 0.02 24
------------- ----------- ------- ------- ---------
T56 P88 4 0.02 0.01 30
------------- ----------- ------- ------- ---------
T57 P88 3 0.02 0.01 14
------------- ----------- ------- ------- ---------
T58 P88 30 0.02 0.02 20
------------- ----------- ------- ------- ---------
T59 P119 1 0.01 0.01 9
------------- ----------- ------- ------- ---------
T60 P113 15 0.04 0.02 13
------------- ----------- ------- ------- ---------
T61 P126 3 0.40 0.11 81
------------- ----------- ------- ------- ---------
T62 P246 9 1.56 0.09 48
------------- ----------- ------- ------- ---------
T63 P138 2 0.05 0.29 93
------------- ----------- ------- ------- ---------
T64 P136 2 0.65 0.10 45
------------- ----------- ------- ------- ---------
T65 P148 5 0.05 0.20 76
------------- ----------- ------- ------- ---------
T66 P151 10 0.05 0.02 13
------------- ----------- ------- ------- ---------
T67 P152 8 0.06 0.01 15
------------- ----------- ------- ------- ---------
T68 P154 6 1.37 0.10 163
------------- ----------- ------- ------- ---------
T69 P173 3 0.02 0.01 12
------------- ----------- ------- ------- ---------
T70 P155 10 1.20 0.14 54
------------- ----------- ------- ------- ---------
T71 P158 14 1.33 0.17 118
------------- ----------- ------- ------- ---------
T72 P163 24 1.65 0.15 52
------------- ----------- ------- ------- ---------
T73 P163 15 1.21 0.13 53
------------- ----------- ------- ------- ---------
T74 P163 3 0.86 0.07 136
------------- ----------- ------- ------- ---------
T75 P186 3 1.14 0.18 85
------------- ----------- ------- ------- ---------
T76 P188 4 2.44 0.07 43
------------- ----------- ------- ------- ---------
T77 P193 14 1.24 0.12 38
------------- ----------- ------- ------- ---------
T78 P193 13 1.93 0.10 36
------------- ----------- ------- ------- ---------
T79 P197 6 0.81 0.08 111
------------- ----------- ------- ------- ---------
T80 P198 5 0.63 0.18 80
------------- ----------- ------- ------- ---------
T81 P219 6 0.01 0.01 12
------------- ----------- ------- ------- ---------
T82 P223 4 0.13 0.37 145
------------- ----------- ------- ------- ---------
T83 P229 6 0.85 0.18 119
------------- ----------- ------- ------- ---------
T84 P223 1 0.67 0.35 106
------------- ----------- ------- ------- ---------
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