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5 Dec 2022 07:00
5 December 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")
Lithium and Tantalum Infill Drill Programme Update
AfriTin Mining Limited (AIM: ATM), an African technology metals mining company with a portfolio of mining and exploration assets in Namibia, announces further results from the lithium and tantalum drilling programme at the Company's flagship operation, the Uis Mine ("Uis").
The 50-hole drilling programme, comprising 29 diamond and 21 reverse circulation (RC) drill holes, aims to increase the confidence of the existing lithium and tantalum mineral resource estimates over the deposit. All 50 drill holes have been completed and are being processed. The results of 25 previous holes were announced on 8 June 2022, 20 July 2022, 10 October 2022 and 22 November 2022. This announcement reports the assay results of the next 5 drill holes (Figure 1). The results of the outstanding 20 drill holes will be provided once received.
Highlights:
· Pegmatite was intersected in all holes at depths and apparent widths predicted by the geological model;
· Significant pegmatite intersections include:
o 90 m at 0.164% Sn, 73 ppm Ta, and 1.40% Li2O from 134 m to 224 m; and 12 m at 0.159% Sn, 182 ppm Ta, and 0.59% Li2O from 115 m to 127 m for drill hole V1V2062;
o 96 m at 0.150% Sn, 68 ppm Ta and 0.72% Li2O from 142 m to 238 m for hole V1V2039;
o 71 m at 0.166% Sn, 81 ppm Ta, and 1.05% Li2O from 157 m to 228 m; and 10 m at 0.091% Sn, 323 ppm Ta and 0.41% Li2O from 139 m to 149 m for drill hole V1V2065;
· These results include some of the drilling programme's most notable intersections of lithium mineralisation within the pegmatite intersections:
o 76 m at 1.56% Li2O from 136 m to 212 m for drill hole V1V2062;
o 26 m at 1.00% Li2O from 180 m to 206 m for drill hole V1V2039; and
o 25 m at 1.65% Li2O from 193 m to 218 m for drill hole V1V2065.
Anthony Viljoen (CEO) commented:
"These exploration drill results contain the highest average lithium grade for a full pegmatite intersection within the V1/V2 pegmatite ore body to date, namely 90m at an average Li2O content of 1.40%. This intersection includes a continuous portion of 76 m at 1.56% Li2O. The lithium grade of the V1/V2 pegmatite appears to increase with depth, and the Company intends to further explore the down dip potential of this pegmatite. We look forward to the potential upgrade of our mineral resource estimate and advancing our lithium and tantalum product development programmes at Uis."
Exploration Programme
The current exploration programme aims to upgrade the existing resource classification for lithium and tantalum over the areas where tin is currently classified within the measured and indicated categories for the 2019 JORC (2012) compliant mineral resource estimate (MRE) (see announcement dated 16 September 2019). The pegmatite intersections of the reported holes align with the current geological model, confirming its spatial accuracy. The drill holes intersected the pegmatite at shallow depths where the V1 and V2 bodies have bifurcated into individual units, as well as greater depths where the units have coalesced. The dip angle of the pegmatites varies from 24 degrees to 48 degrees and the drill holes are orientated vertically such that reported intersections represent apparent thickness.
Drill hole V1V2039 deflected towards the west while drilling and as a result the hole was terminated within ore to avoid superfluous drilling down the dip of the pegmatite. The deeper drill holes from this programme appear to intersect greater volumes of pegmatite, and these deeper extensions may also contain higher lithium grades as indicated below.
Table1: Exploration results of RC drill holes V1V2060, V1V2062, V1V2039, V1V2065, and V1V2029 indicating the full pegmatite intersection and pegmatite grades as well as selected higher grades within the pegmatites as per the highlights. Intersections are indicative of apparent thickness and not true thickness; note that apparent thickness is greater than true thickness.
Hole ID | Dip Angle (Degrees) | Pegmatite |
| From/To (m) excluding Waste | Interval (m) | Grade | ||
Sn (%) | Ta (ppm) | Li2O (%) | ||||||
V1V2060 | Vertical | V2 | Whole Intersection | 36-42 | 6.00 | 0.075 | 170 | 0.36 |
Whole Intersection | 43-60 | 17.00 | 0.129 | 95 | 0.48 | |||
V1 | Whole Intersection | 73-83 | 10.00 | 0.159 | 89 | 0.50 | ||
Whole Intersection | 84-101 | 17.00 | 0.137 | 98 | 0.49 | |||
Whole Intersection | 104-143 | 39.00 | 0.143 | 89 | 0.62 | |||
V1V2062 | Vertical | V2 | Whole Intersection | 115-127 | 12.00 | 0.159 | 182 | 0.59 |
V1 | Whole Intersection | 134-224 | 90.00 | 0.164 | 73 | 1.40 | ||
Including | 136-212 | 76.00 | 0.167 | 72 | 1.56 | |||
V1V2039 | Vertical | V1/V2 | Whole Intersection | 142-238 | 96.00 | 0.150 | 68 | 0.72 |
Including | 180-206 | 26.00 | 0.157 | 66 | 1.00 | |||
V1V2065 | Vertical | V2 | Whole Intersection | 139-149 | 10.00 | 0.091 | 323 | 0.41 |
V1 | Whole Intersection | 157-228 | 71.00 | 0.166 | 81 | 1.05 | ||
Including | 193-218 | 25.00 | 0.163 | 65 | 1.65 | |||
V1V2029 | Vertical | V2 | Whole Intersection | 16-34 | 18.00 | 0.111 | 108 | 0.54 |
The drilling method for the holes in Table 1 is reverse circulation (RC). Each drill hole was geologically logged before being sampled at one-meter intervals. Sample analysis was undertaken by UIS Analytical Services, a certified independent laboratory, using a peroxide fusion; ICP-OES analysis was utilised for major and minor elements and ICP-MS was utilised for the trace elements.
Figure 1: Map displaying the localities of the reported holes, the drill holes of the previous (2019) exploration programme and the holes from the current programme previously reported. Line A-A' indicates the area represented by the cross section (Fig.2).
Figure 2: Section line A-A' displaying a projection of the holes drilled during the current programme for which the results are reported in this release and previous communications for this programme. Full details of the pegmatite intersections for drill hole V1V2060 are reported in Table 1.
Competent Person Statement
The technical data in this announcement has been reviewed by Michael Cronwright (M.Sc., FGSSA, Pr. Sci Nat. (Geological Sciences)). He is a full-time employee of CSA Global, and provides geological consulting services to AfriTin. Mr Cronwright is the Principal Consultant - Battery Metals co-ordinator for CSA Global and has 22 years of industry related exploration as well as mineral project development experience and is a Competent Person for the reporting of these exploration results. He has reviewed both the technical disclosures in this release as well as the quality assurance protocols and results for the assay campaign. Mr Cronwright consents to the release of the information contained in this announcement and is satisfied that the results of the QAQC on the assay results released to date are sufficient to support the planned estimation of mineral resources.
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 |
JORC | The Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves |
MRE | Mineral Resource Estimate |
PPM | Parts Per Million |
QA/QC | Quality Assurance / Quality Control |
RC | Reverse Circulation drilling |
Sn | Symbol for Tin |
Ta | Symbol for Tantalum |
V1/V2 | Name of the targeted pegmatite unit, V1/V2 denotes where the V1 and V2 pegmatites have merged at depth. |
Glossary of Technical Terms
Apparent Thickness | The relationship between apparent width and true thickness is based on the formula by Addie (Economic Geology, 1968, vol 63, pp 188-189). |
Dip Angle | The angle of inclination measured downward from horizontal |
Geological Model | The interpretation of mineralisation and geology applicable to an ore body. This is usually generated in a three-dimensional computer environment |
Mineral Resources | Mineral Resources are sub-divided, in order of increasing geological confidence, into Inferred, Indicated and Measured categories. An Inferred Mineral Resource has a lower level of confidence than that applied to an Indicated Mineral Resource. An Indicated Mineral Resource has a higher level of confidence than an Inferred Mineral Resource but has a lower level of confidence than a Measured Mineral Resource |
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 |
Xenolith | A foreign rock fragment (e.g. schist) within an intrusive body (e.g. pegmatite) that is unrelated to the igneous body. |
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.
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