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Germany
Zinnwald Project

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 Location:
3 km SE from Altenberg, Germany

  Project Contacts:
Am Junger-Löwe-Schacht 10
Freiberg
Germany
09599
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
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  • Filings & News

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Overview

StagePermitting
Mine TypeUnderground
Commodities
  • Lithium
  • Potassium
  • LCE
  • Calcite
Mining Method
  • Sub-level stoping
  • Avoca
  • Room-and-pillar
  • Backfill
Mine Life36 years (as of Jan 1, 2022)
The Company was granted a five-year Exploration Licence covering approximately 225 hectares in the Erzgebirge or Ore Mountains region of Saxony, Germany. The grant of this licence coupled with the Falkenhain and Altenburg licences represents exciting expansion potential for Zinnwald.

Deutsche Lithium will begin a process of updating the feasibility study.


Owners

Source: p. 16
CompanyInterestOwnership
Zinnwald Lithium plc 100 % Indirect
In October 2020, Zinnwald Lithium Plc, acquired an initial 50% of Deutsche Lithium GmbH. Subsequently, in June 2021, it acquired the remaining 50%. Deutsche Lithium GmbH is controlled, funded and ultimately wholly owned by Zinnwald Lithium.

Deutsche Lithium holds 100% interest and operational control of the Project Zinnwald Lithium project.

Contractors

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Deposit Type

  • Greisen hosted


Summary:

Greisen formation is associated with the cooling of a highly fractionated H2O-rich granitic intrusion and the enrichment of incompatible volatile elements in the upper part of the intrusion such as F, Cl, B and Li during fractional crystallization. The metasomatic greisen formation, called greisenization, is defined as a granite-related, post-magmatic process during which biotite and K- / Na-feldspars became unstable (ŠTEMPROK, 1987 [153]). Subsequently to Na-feldspathization it is commonly controlled by the further decrease of the alkali / H+ ratios (PIRAJNO, 2009 [141]). Granite minerals and textures are replaced by complex aggregates of micas, quartz, topaz, and fluorite with a considerable addition of some elements such as Sn, W, Li, Mo, Be and others. Highly aggressive, Fbearing solutions induce the formation of fluoride minerals, which are compared to other metasomatic rocks very common in greisen (ROMER et al., 2010 [146]). Greisenization can affect different wall rocks. Its intensity depends basically on the texture of the protolith. A broad range of formation temperatures between 250°C – 500 °C and pressures of 0.3 kbar – 0.8 kbar is suggested by POLLARD, 1983 [142] for the formation of greisen minerals. Latest fluid inclusion studies indicate that all elements required for the formation of the mineralization at Zinnwald were contained in a single magmatic hydrothermal fluid that underwent two main processes, fluid rock interaction and depressuration (KORGES et al ........


Mining Methods

  • Sub-level stoping
  • Avoca
  • Room-and-pillar
  • Backfill


Summary:

The ore extraction planning in the project has three targets:
- To provide constant volume and quality of ore for the minerals processing
- To economically optimize the process
- To operate efficiently without risking safety or environment

The operation has been designed for an annual output of c. 12,000 t/a LiOH. Applying the mineral reserve estimation of 3,004 ppm lithium content, and estimated Lithium recovery in downstream processes this corresponds to an average annual ore production of 880,000 tons.

The conceptual plan for mining operations is based on access from Altenberg Mine on 500 m Reduced Level (RL) advancing upwards with room and pillar, AVOCA, and sublevel stoping methods followed by hardening backfill. On production levels LHD (Load-Haule-Dump) loaders dump the mined material into ore passes from where the ROM (Run of Mine) is transported 7 kms to ROM pad downhill to Bärenstein via Zinnerz – Altenberg Mine drainage tunnel (“Entwässerungsstollen Altenberg”).

The mine is an integral part of the process tailings management as the Leach Residue from the hydrometallurgical process will be permanently located underground. This requirement has a major impact on selection of mining method and on sequencing of mine production. To prevent impacts on the surface, 90% - of void created in the ore will be backfilled.

The mine will be first accessed from two locations: From the Zinnerz – Altenberg Mine with a 4 k ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Lithium Hydroxide kt 12426
Potassium Sulphate kt  ......  Subscription required  ......  Subscription required
Calcite Carbonate t  ......  Subscription required
LCE t  ......  Subscription required

Operational Metrics:

Metrics
Daily ore mining rate  ......  Subscription required
Annual mining capacity  ......  Subscription required
Annual processing capacity  ......  Subscription required
Annual ore mining rate  ......  Subscription required
Mining scale, tpd  ......  Subscription required
* According to 2022 study.
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Reserves at May 31, 2019:
For the purpose of project appraisal, the previously calculated Mineral Reserves from the 2019 FS report have been used as mining inventory.

cut-off = 2,500 ppm Li

CategoryTonnage CommodityGradeContained Metal
Proven 16,504 kt Lithium 3075 ppm 51 kt
Probable 14,699 kt Lithium 2933 ppm 43 kt
Proven & Probable 31,203 kt Lithium 3004 ppm 94 kt
Measured 18,510 kt Lithium 3630 ppm
Indicated 17,000 kt Lithium 3399 ppm
Measured & Indicated 35,510 kt Lithium 3519 ppm
Inferred 4,865 kt Lithium 4865 ppm

Commodity Production Costs:

CommodityAverage
Cash costs LiOH  ......  Subscription required&nbs
Cash costs LiOH  ......  Subscription required *†
Assumed price LiOH  ......  Subscription required&nbs
Assumed price Potassium  ......  Subscription required *
* According to 2022 study / presentation.
† Net of By-Product.
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2022 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
Total OpEx $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 10% $M USD  ......  Subscription required
Pre-tax NPV @ 8% $M USD  ......  Subscription required
After-tax NPV @ 10% $M USD  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.

Water Supply
Source: Subscription required

- subscription is required.


Proposed Heavy Mobile Equipment as of September 6, 2022:
HME TypeQuantity
Drill (long hole) ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 23, 2023
....................... Subscription required ....................... Subscription required Sep 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Feb 23, 2023
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Preliminary Economic Assessment 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Other 2018
Project Description 2014
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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