CRITICAL MINERAL COMPANIES · RESEARCH
California critical mineral companies & projects
Research 25 documented projects and facilities in California, United States. Explore mineral exposure, source-reported activity, operators and company connections.
25projects & facilities
26linked organizations
14mineral categories
1asset regions
Asset counts by province / state · select a region
Natural Earth · NRCan / USGS
Canada’s mapped coordinates come from NRCan’s 2025 inventory. U.S. assets are mapped by state using USGS’s June 2026 release. Asset counts describe directory coverage.
MINERAL EXPOSURE
California at a glance
SUPPLY-CHAIN ACTIVITIES
Where assets fit
One asset can report several minerals. An organization may participate in multiple assets. Activity grouping describes the source record, and does not confirm current production, commercial availability or investment readiness.
THE ASSET INVENTORY
Projects, mines & facilities
| Project / facility | Minerals | Region | Source classification |
|---|---|---|---|
| Blue Moon Mine ↗Blue Moon Metals Inc. | Copper · Silver · Zinc | CaliforniaUnited States | MineIn development · 2026-06-29 |
| Boron Facility ↗U.S. Borax | Boron · Lithium | CaliforniaUnited States | RefineryAssumed active · 2026-06-29 |
| Boron Mine ↗U.S. Borax | Boron · Lithium | CaliforniaUnited States | Mines and QuarriesAssumed active · 2026-06-29 |
| Calenergy Lithium Project ↗BHE Renewables | Lithium | CaliforniaUnited States | RefineryIn development · 2026-06-29 |
| Castle Mountain Mine ↗Equinox Gold Corp. | Silver | CaliforniaUnited States | Mines and QuarriesAssumed active · 2026-06-29 |
| Castle Mountain Plant ↗Equinox Gold Corp. | Silver | CaliforniaUnited States | Mineral Processing PlantAssumed active · 2026-06-29 |
| Chino Refinery ↗Almanon Inc. | Platinum group metals | CaliforniaUnited States | RefineryAssumed active · 2026-06-29 |
| Chula Vista Plant ↗South Bay Salt Works | Magnesium | CaliforniaUnited States | Mineral Processing PlantAssumed active · 2026-06-29 |
| City of Industry Smelter ↗Eco-Bat Technologies Usd Ltd. | Lead | CaliforniaUnited States | SmelterCare and maintenance · 2026-06-29 |
| Florin ↗Industrial Minerals Co. | Barite | CaliforniaUnited States | Mineral Processing PlantAssumed active · 2026-06-29 |
| Fort Cady ↗5N Plus Inc. | Boron · Lithium | CaliforniaUnited States | RefineryIn development · 2026-06-29 |
| Hells Kitchen Critical Minerals and Power Project ↗Controlled Thermal Resources LLC | Lithium | CaliforniaUnited States | RefineryIn development · 2026-06-29 |
| Ione Mine ↗U.S. Mine Corporation | Titanium · Zirconium | CaliforniaUnited States | MineAssumed active · 2026-06-29 |
| Mesquite Mine ↗Equinox Gold Corp. | Silver | CaliforniaUnited States | MineAssumed active · 2026-06-29 |
| Mesquite Processing Facility ↗Equinox Gold Corp. | Silver | CaliforniaUnited States | Mineral Processing PlantAssumed active · 2026-06-29 |
| Mountain Pass Mine ↗MP Materials Corp. | Rare earths | CaliforniaUnited States | MineAssumed active · 2026-06-29 |
| Mountain Pass Processing Facility ↗MP Materials Corp. | Rare earths | CaliforniaUnited States | RefineryAssumed active · 2026-06-29 |
| Project Atlis ↗Energysouce Minerals LLC | Lithium | CaliforniaUnited States | RefineryIn development · 2026-06-29 |
| Santa Ana Refinery ↗Gemini Industries Inc. | Germanium · Platinum group metals · Rhenium | CaliforniaUnited States | RefineryInactive · 2026-06-29 |
| Santa Fe Springs Plant ↗Heraeus Metal Processing LLC | Platinum group metals | CaliforniaUnited States | RefineryAssumed active · 2026-06-29 |
| Soledad Mountain Mine ↗Andean Precious Metals Corp. | Silver | CaliforniaUnited States | Mines and QuarriesAssumed active · 2026-06-29 |
| Soledad Mountain Plant ↗Andean Precious Metals Corp. | Silver | CaliforniaUnited States | Mineral Processing PlantAssumed active · 2026-06-29 |
| Trona Plant ↗Searles Valley Minerals | Boron | CaliforniaUnited States | Mineral Processing PlantAssumed active · 2026-06-29 |
| Vallejo ↗Precision Castparts Corp. | Titanium | CaliforniaUnited States | RefineryAssumed active · 2026-06-29 |
| Westend Plant ↗Searles Valley Minerals | Boron | CaliforniaUnited States | Mineral Processing PlantAssumed active · 2026-06-29 |
CORPORATE FOOTPRINT
Companies & operators
INDUSTRY ORGANIZATION
5N Plus Inc. ↗
Boron · Cadmium · Germanium · Lithium · Tellurium
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONAlmanon Inc. ↗
Platinum group metals
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONAndean Precious Metals Corp. ↗
Silver
2 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONBerkshire Hathaway ↗
Titanium
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONBerkshire Hathaway Energy ↗
Lithium
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONBHE Renewables ↗
Lithium
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONBlue Moon Metals Inc. ↗
Copper · Silver · Zinc
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONControlled Thermal Resources Holdings Inc. ↗
Lithium
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONControlled Thermal Resources LLC ↗
Lithium
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONEco-Bat Technologies Usd Ltd. ↗
Lead
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONEnergysouce Minerals LLC ↗
Lithium
1 assets in this viewProfile ↗
INDUSTRY ORGANIZATIONEquinox Gold Corp. ↗
Silver
4 assets in this viewProfile ↗
CONTINUE YOUR RESEARCH
Mineral sectors in California
Research sources
- U.S. Geological Survey — U.S. facilities, June 2026 ↗Inventory: 2026-06-29 · Checked 2026-09-10
Each asset profile includes its source references and dates. Read the coverage, data licences and review methodology ↗.