Mining Capital FundsMCF Mining Approvals Index

Data as at 18 October 2026 · from Western Australian Government registers and open data

Western Australian mining project · Operating

Kemerton Silicon / Simcoa

Kemerton Silicon / Simcoa is a Western Australian mining project (operating) in MINEDEX, owned by Simcoa Operations Pty Ltd 100%, on 7 current tenements held by SIMCOA OPERATIONS PTY LTD.

MINEDEX project
J00918
Stage
Operating
Owners (MINEDEX)
Simcoa Operations Pty Ltd 100%
Tenement holders
SIMCOA OPERATIONS PTY LTD
Parent groups
Shin-Etsu Chemical
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

CommodityResourcesReservesLatest estimate
Chert10 Mt at 99.7%, 10.3 Mt contained—1 July 2012

Current MINEDEX estimates over all the project's sites; resources may include reserves. MINEDEX (DMPE), CC BY 4.0.

Production recorded in MINEDEX

CommodityLatest yearThat yearAll recorded
Quartzite199993 kt797 kt
Silica200198 kt190 kt

Historical: the bulk extract's production records end in 2002.

EPA Ministerial Statements

MS 813 Silicon Project, Kemerton and Mine at Moora - Revised Proposal

Tenements

TenementHolderStatusExpiresCommoditiesHectares
M 70/191
Mining lease
SIMCOA OPERATIONS PTY LTDGranted4 September 2026219
M 70/1292
Mining lease
SIMCOA OPERATIONS PTY LTDGranted23 February 2033516
M 70/1416
Mining lease
SIMCOA OPERATIONS PTY LTDApplication538
G 70/91
General purpose lease
SIMCOA OPERATIONS PTY LTDGranted3 January 20335
G 70/92
General purpose lease
SIMCOA OPERATIONS PTY LTDGranted3 January 20338
G 70/93
General purpose lease
SIMCOA OPERATIONS PTY LTDGranted3 January 20338
E 70/4776
Exploration licence
SIMCOA OPERATIONS PTY LTDGranted26 May 20261,196