MCF Mining Approvals IndexData as at 18 October 2026 · from Western Australian Government registers and open data
Western Australian mining project · Operating
Mt Marion Lithium
Mt Marion Lithium is a Western Australian mining project (operating) in MINEDEX, owned by Mineral Resources Limited 50%; Ganfeng Lithium Company Limited 50%; Posco Holdings Inc; Process Minerals International Pty Ltd, on 9 current tenements held by A.C.N. 665 883 509 PTY LTD; MT MARION LITHIUM PTY LTD; PROCESS MINERALS INTERNATIONAL PTY LTD. Commodities: Lithium, Tantalum, Gold, Silver.
- MINEDEX project
- J02285
- Stage
- Operating
- Owners (MINEDEX)
- Mineral Resources Limited 50%; Ganfeng Lithium Company Limited 50%; Posco Holdings Inc; Process Minerals International Pty Ltd
- Tenement holders
- A.C.N. 665 883 509 PTY LTD
MT MARION LITHIUM PTY LTD
PROCESS MINERALS INTERNATIONAL PTY LTD - Commodities
- Lithium, Tantalum, Gold, Silver
- Rehabilitation liability
- Its rehabilitation liability is in the MCF Mining Index (subscribers): the Mining Rehabilitation Fund estimate, its trend since 2014, company provisions and closure-plan costs
Resources and reserves
| Commodity | Resources | Reserves | Latest estimate |
|---|---|---|---|
| Lithium oxide | 66 Mt at 1.3%, 886 kt contained | 36 Mt at 1.4%, 506 kt contained | 31 January 2024 |
| Iron | 66 Mt at 0.92%, 606 kt contained | — | 31 January 2024 |
Current MINEDEX estimates over all the project's sites; resources may include reserves. MINEDEX (DMPE), CC BY 4.0.
Mine closure plans
| Site | Operator | Latest plan approved | Plan (PDF on GeoDocs) | Closure year |
|---|---|---|---|---|
| to Mining Operations ( ) - Mt Marion Spodumene Concentrate Project | Process Minerals International Pty Limited | 1 July 2019 | Revised Mining Proposal - Amendment to Mining Operations (Revision 4) - Mt Marion Spodumen | |
| Mt Marion - Mt Marion Lithium Project | Reed Industrial Minerals Pty Limited | 11 July 2018 | Mt Marion Mine Closure Plan - Revision - Mt Marion Lithium Project - S0231715 | |
| SOUTH KALGOORLIE OPERATIONS (GUNGA WEST / NEW CELEBRATION) - MF 15, 25, 26 | HBJ Minerals Pty Limited | 10 July 2018 | MINE CLOSURE PLAN - SOUTH KALGOORLIE OPERATIONS (GUNGA WEST / NEW CELEBRATION) - MF 15, 25 | 2021 |
| Alacer Gold Corp South Kalgoorlie Operations | Alacer Gold Pty LIMITED | 18 February 2016 | Alacer Gold Corp South Kalgoorlie Operations Mine Closure Plan April 2013 |
Tenements
| Tenement | Holder | Status | Expires | Commodities | Hectares |
|---|---|---|---|---|---|
| M 15/717 Mining lease | MT MARION LITHIUM PTY LTD | Granted | 18 September 2036 | Lithium, Tantalum, Gold, Silver | 977 |
| M 15/841 Mining lease | A.C.N. 665 883 509 PTY LTD | Granted | 18 August 2038 | Lithium, Tantalum | 863 |
| M 15/999 Mining lease | MT MARION LITHIUM PTY LTD | Granted | 19 August 2030 | Lithium, Tantalum | 50 |
| M 15/1000 Mining lease | MT MARION LITHIUM PTY LTD | Granted | 19 August 2030 | Lithium, Tantalum | 401 |
| M 15/1937 Mining lease | A.C.N. 665 883 509 PTY LTD | Application | Lithium | 1,665 | |
| L 15/360 Miscellaneous licence | MT MARION LITHIUM PTY LTD | Granted | 2 November 2037 | Lithium, Tantalum | 25 |
| L 15/376 Miscellaneous licence | PROCESS MINERALS INTERNATIONAL PTY LTD | Granted | 1 January 2039 | Lithium, Tantalum | 102 |
| L 15/392 Miscellaneous licence | MT MARION LITHIUM PTY LTD | Granted | 23 January 2040 | Lithium, Tantalum | 69 |
| E 15/984 Exploration licence | A.C.N. 665 883 509 PTY LTD | Granted | 2 July 2028 | Lithium | 1,556 |