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Finniss Lithium Project

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The Finnis Lithium Project is a lithium mine situated near Darwin in the Northern Territory, Australia. It is being developed by Core Lithium.

The ore body was discovered in 2016, and feasibility work was done in 2018–2020 with a firm investment decision made in September 2021. Commercial production began in February 2023 with an 8-year lifespan.[1]

Geological setup

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The mine comprises 500 km2 (190 sq mi) of leases, covering the Bynoe pegmatite field (BPF) and several pegmatites near Darwin.[1] Specifically, it encompasses the five ore deposits "Grants, Carlton, Sandras, Hang Gong SW, and BP33."[1] The:[2]

ore bodies of the Finniss lithium project are characterised as lithium-cesium-tantalum (LCT) pegmatite deposits that are hosted within the Burrell Creek metasedimentary rock formation. The pegmatites at the deposits comprise lithium-bearing spodumene, quartz, albite, microcline as well as mica

with a consistent lithium content across the ore body.[2]

Description

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Core Lithium is developing the project,[3] having completed a pre-feasibility study (PFS) in June 2018 and a definitive feasibility study (DFS) in April 2019. Revisions to the feasibility study were completed in 2020 to incorporate underground mining methods in the mining plan. A revised DFS was completed in July 2021 outlining a project that will occur in multiple stages. The first stage will involve open-pit mining near Grants and Hang Gong, as well as underground mining at the Grants, BP33, and Carlton prospects.[1] The Australian JORC 2012 compliance process estimated 3.45 million tonnes (Mt) of mineral resource at 1.4 percent lithium oxide.[3] Major Project Status (MPS) was granted by the Australian government in March 2021, recognizing the strategic significance of the project.[4]

Battery-grade lithium hydroxide was produced as part of the test works on spodumene mineral concentrate sample from the project in April 2021.[1] Construction began in 2021 and full operational mining commenced in October 2022,[5] with the first shipment of spodumene concentrate being exported from the Port of Darwin in May 2023.[1]

Development of the mine is an $89 million project. Over the 12-year lifespan of the project 16 million tonnes (35 billion pounds) of ore are expected to be mined. Most lithium concentrate is expected to be exported overseas.[5]

Production and sales

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In 2022, Tesla contracted for 110 thousand tonnes (240 million pounds) of spodumene concentrate over four years from the Core Lithium and the Finniss lithium mine.[6][5]

See also

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References

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  1. ^ a b c d e f "Finniss Lithium Project, Northern Territory, Australia". Mining Technology. 13 January 2022. Retrieved 13 October 2022.
  2. ^ a b "Finniss Lithium Project". business.com. NS Energy. Retrieved 13 October 2022.
  3. ^ a b CORE Lithium : Finnis Lithium, retrieved 13 October 2022
  4. ^ Matthis, Simon (17 March 2021). "Australia grants MPS for Core Lithium's Finniss lithium project". MiningMetalNews. Archived from the original on 13 October 2022. Retrieved 13 October 2022.
  5. ^ a b c "Core Lithium opens the Northern Territory's first lithium mine amid surging demand for electric vehicles". ABC News. 10 October 2022. Retrieved 15 October 2022.
  6. ^ "NT opens first lithium mine, supplying Tesla". PV Magazine. 13 October 2022. Retrieved 15 October 2022.
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