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Namibia

Uis Mine

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Uis Mine

Location: 164 km N from Swakopmund, Namibia

Address:

Remainder of Mining Areas Uis, No.55
Uis
Namibia

Contacts:

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Categories

Summary

Mine TypeOpen Pit
StatusActive
Commodities
  • Tin
  • Tantalum
  • Lithium
Mining Method
  • Truck & Shovel / Loader
Production Start... Lock
Mine Life... Lock
SnapshotUis tin mine is highly scalable, with significant by-product potential for lithium and tantalum. Ultimately, Uis has the potential to become a global lithium supplier.

Development projects for the Uis mine are aimed at rapidly expanding existing tin and tantalum production and establishing a new lithium concentrate product, all from the same run-of-mine ore feed.

Production Perfomance as at June 2025:
• Achieved Stage 1 & 2 plant construction expansion in 6 years;
• Consistently achieving production more than nameplate capacity of 100tpm, targeting 125tpm with Continuous Improvement 2 initiatives;
• Over 65% recovery achieved consistently for the last 18 months;
• Operational team achieving over 90% plant availability and over 90% plant utilisation for the last 2 years;
• Tantalum shipments from 2024;
• Initiation of the 4th mining pushback to access higher grade lithium ore for further testwork and pilot production;
• Uis JORC Compliant MRE updated in 2025.

Owners

SourceSource
CompanyInterestOwnership
Andrada Mining Ltd. 100 % Indirect
Andrada Mining has full ownership of all licences in its portfolio following the strategic restructuring of Uis Tin Mining Company Proprietary Limited ("UTMC") in June 2024. The transaction resulted in 100% ownership of the flagship Uis Mining Licence from 85% during the partnership with the Small Miners of Uis ("SMU"). Namibian partners, SMU, transferred their equity ownership from UTMC to Andrada Mining.

Contractors

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SourceSource

Deposit type

  • Pegmatite
  • Intrusion related

Summary:

The mining licence ML 134 is approximately 200 km² in size and includes a large portion of the Sn-Nb-Ta type pegmatites swarms in the Uis area. The pegmatites are granitic in composition and are homogeneous intrusions without prominent mineral zonation. Mineralisation in terms of Sn, Ta and Nb is generally associated with alteration zones known as greisens and saccharoidal aplitic units. In addition to the Sn and Ta mineralisation within the Uis swarm, lithium phases have also been identified in the form of lepidolite, petalite, eucryptite and cookeite. On ML 134 the primary lithium mineral is petalite.

The Uis Pegmatite Swarm has three clusters: Northern, Central and Southern. The pegmatites generally have a northeast to east strike, and dip between 30 deg and 70 deg towards the northwest. The southeast dipping host biotite schis and gneiss of the isoclinally folded Amis River Formation (including the Knottenschiefer) of the Damara Supergroup is crosscut by these pegmatites. The mineralisation type is primarily magmatic but may be due to alteration. Primary cassiterite is formed towards the end of a pegmatite's crystallisation history, when enough magmatic differentiation has made tin insoluble.

Orebody widths, strike and depth extents are highly variable and are based on the interpretation of the drillhole and surface exposure data. Mineralised intercepts do not represent actual orebody widths due to the varying inclination of intercepts relative to the mineralised zones. The modelled mineralised widths are generally less than 30 m. The K cluster of mineralisation extends along strike for approximately 1,740 m and 240 m down the dip slope. The P -cluster has a strike extent of approximately 860 m and a maximum downdip depth of 185 m. The V cluster has a strike length of approximately 1,900 m and maximum downslope extent of 240 m. No geological structures such as dykes or faults have been modelled. No additional geological losses have been applie the Mineral Resource estimates.

V1V2 pegmatite
The V1 and V2 pegmatites are magmatic intrusive bodies with sigmoidal shapes in plan.

The V1V2 pegmatite has a sigmoidal shape in plan and is hosted in biotite schists and a distinctive cordierite (with biotite and quartz replacement of cordierite)-bearing knotted schist (the so-called "knottenschiefer"). The pegmatite strikes to the northeast and dips to the northwest at angles of between 30° and 50". The tin and lithium mineralisation is primarily magmatic with some tin mineralisation associated with a late-stage mica-rich greisen phase. The primary lithium mineral identified within the pegmatite is petalite.

The V1 and V2 pegmatites are exposed in the V1/V2 pit and are two of the largest pegmatites on ML 134. The V1 pegmatite is exposed in the northeast of the pit, and the V2 in the northwest and the pegmatites merge within the pit. The V1 pegmatite extends strikes northeast-southwest for approximately 600 m, dipping at 50° to the northwest, with an average thickness of about 25 m. In the western portion of the pit, the V1 Pegmatite merges with the V2 Pegmatite and the pegmatite dips at 30-40° to the northwest and west-northwest, discordant to the country-rock schist which dips to the southeast.

The V2 Pegmatite is around 10 m thick in the east, but thickens to >40 m towards the southwest, along the northwestern highwall of the pit where it merges with the V1 pegmatite, and dips into the northwest highwall. It is exposed along the entire northwest pit face and is traceable within the pit and for at least 650 m on surface to the southwest or south-southwest. Together, the V1 and V2 pegmatites extend along a northeast-southwest strike distance of over approximately 1.2 km, and consistently reach thicknesses of over 20 m.

Reserves

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Mining Methods

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Heavy Mobile Equipment

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Comminution

Crushers and Mills

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Processing

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Water usage

Parameter2025202420232022
Water use efficiency 0.21 m3/t0.21 m3/t0.22 m3/t0.33 m3/t
Groundwater 201,299 m3187,603 m364,331 m369,999 m3
Third-party water 7,378 m36,500 m37,487 m39,224 m3
Mine dewatering water 34,479 m352,104 m370,185 m3

Commodity Production

CommodityProductUnits20252024202320222021
Tin Metal in concentrate t  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Tin Concentrate kt  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Tantalum Concentrate kt  ....  Subscribe  ....  Subscribe
Tantalum Metal in concentrate kt  ....  Subscribe  ....  Subscribe

Operational metrics

Metrics20252024202320222021
Hourly processing rate  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
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Production Costs

CommodityUnits2025202420232022
All-in sustaining costs (AISC) Tin USD  ....  Subscribe  ....  Subscribe
All-in sustaining costs (AISC) Tin USD  ....  Subscribe  ....  Subscribe
C1 cash costs Tin USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
C2 total cash costs Tin USD  ....  Subscribe  ....  Subscribe
C2 total cash costs Tin USD  ....  Subscribe  ....  Subscribe
** Net of By-Product.

Mine Financials

Units202520242023202220212020
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Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Mar 31, 2025
....................... Subscription required ....................... Subscription required Subscription required Jan 15, 2026
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Workforce

EmployeesContractorsTotal WorkforceYear
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Aerial view:

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