MCF Mining Approvals IndexData as at 18 October 2026 · from Western Australian Government registers and open data
Western Australian mining project · Care and Maintenance
Sinclair Lithium-Caesium
Sinclair Lithium-Caesium is a Western Australian mining project (in care and maintenance) in MINEDEX, owned by Develop Global Limited 100%; Lepidico Ltd, on 3 current tenements held by ESSENTIAL METALS PTY LTD. Commodities: CS, Lithium, Nickel, Copper, Platinum group elements.
- MINEDEX project
- J04865
- Stage
- Care and Maintenance
- Owners (MINEDEX)
- Develop Global Limited 100%; Lepidico Ltd
- Tenement holders
- ESSENTIAL METALS PTY LTD
- Commodities
- CS, Lithium, Nickel, Copper, Platinum group elements
- 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 |
|---|---|---|---|
| Cesium oxide | 0.01 Mt at 16.7%, 1,167 t contained | — | 8 November 2018 |
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 |
|---|---|---|---|---|
| Pioneer Dome Project | Pioneer Resources LIMITED | 23 July 2018 | Pioneer Dome Project Revised Mining Proposal Version 2 |
Tenements
| Tenement | Holder | Status | Expires | Commodities | Hectares |
|---|---|---|---|---|---|
| M 63/665 Mining lease | ESSENTIAL METALS PTY LTD | Granted | 12 November 2038 | CS, Lithium | 97 |
| L 63/77 Miscellaneous licence | ESSENTIAL METALS PTY LTD | Granted | 13 December 2038 | CS, Lithium | 118 |
| E 63/1669 Exploration licence | ESSENTIAL METALS PTY LTD | Granted | 13 April 2027 | Lithium, CS, Nickel, Copper, Platinum group elements | 3,955 |