Overview
Stage | Permitting |
Mine Type | Underground |
Commodities |
- Lithium
- Potassium
- LCE
- Calcite
|
Mining Method |
- Sub-level stoping
- Avoca
- Room-and-pillar
- Backfill
|
Mine Life | 36 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. |
Source:
p. 16
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
- Subscription is required.
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 ........

Source:

- subscription is required.
Flow Sheet:
Summary:

- subscription is required.
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
Category | Tonnage | Commodity | Grade | Contained 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
|
|
Source:

- subscription is required.
Corporate Filings & Presentations:
- Subscription is required.
- Subscription is required.