Mining Intelligence and News
United States

Tonopah Lithium Flats Project

Click for more information

Categories

Summary

Mine TypeOpen Pit
Study CompletedPrefeasibility
StagePermitting
Commodities
  • Lithium
Mining Method
  • Truck & Shovel / Loader
Mine Life... Lock
SnapshotTonopah Flats Lithium Project (TFLP) is a lithium-bearing claystone resource with an associated refinery, as outlined in the Preliminary Feasibility Study of 4 September 2025.

Construction and commissioning of the lithium hydroxide (LiOH) pilot plant have been completed, enabling demonstration of an integrated flowsheet for extracting lithium from the unconventional Tonopah Flats resource and producing battery-grade lithium hydroxide for customer qualification.

TFLP is one of the largest identified lithium resources in the U.S., with the PFS detailing its mineral resources, reserves, and the technical and financial pathway for developing the lithium mine and lithium hydroxide monohydrate (LHM) refinery.

In August 2025, TFLP was approved by the National Energy Dominance Council and the FAST-41 Permitting Council as a Covered Priority Project, enabling streamlined federal permitting to accelerate commercialization.
Latest NewsAmerican Battery Technology Company Publishes Milestone Pre-Feasibility Study Accelerating Commercialization of its Tonopah Flats Lithium Project, One of the Largest Lithium Resources in the United States     October 16, 2025

Owners

SourceSource
CompanyInterestOwnership
American Battery Technology Company 100 % Indirect
American Battery Technology Company (ABTC) owns 100% of the claims comprising the Tonopah Flats property.

Contractors

Lock

- subscription is required.

Deposit type

  • Sedimentary
  • Sediment-hosted

Summary:

Tonopah Flats Lithium Project is a sedimentary- or clay-hosted lithium deposit.

Lithium mineralization has been identified within the Miocene Siebert Formation in the southeastern portion of Big Smoky Valley. Lithium mineralization occurs within a thick sequence of lacustrine claystones with thin (3 m or less) interbeds of silt, tuffaceous sandstone, and crystal tuffs. The identified claystone thickness in the project area exceeds 436 m and appears to thicken toward the sedimentary basin to the west. The overall sedimentary package within the project area is flat lying to gently dipping as indicated by a tuffaceous marker bed identified in drill hole chips and core.

A drill hole on the western edge of the drilled area encountered 160 m of alluvial cover and did not reach the claystone unit. However, the hole was collared adjacent to a fault mapped by Bonham and Garside (1979) that bounds thicker Quaternary fill to the west. Drilling on an adjacent property to the west of the Tonopah Flats property has also confirmed a thick sequence of alluvial material west of the fault. Oligocene and older Miocene volcanic rocks below the Siebert Formation have not been encountered at the maximum depth of present drilling (436 m).

Drilling by ABTC has so far defined an area of generally continuous lithium mineralization 7,925 m north to south by 1,524 m to 4,572 m east to west, with thicknesses up to 436 m. Clay beds with higher concentrations of lithium are localized to semi-continuous, and the lithium-bearing beds are generally contained in a 1,219 m- to 3,048 m-wide corridor in multiple stratigraphic horizons.

Elevated lithium mineralization from 6 m to 67 m in thickness and grading up to 1000 ppm trends north to south through the central portion of the property. Interbeds of tuffaceous sandstone, crystal tuff, and siltstone less than 3 m thick show a general decrease in lithium with values of 200 ppm or less.

The lithium deposit, defined as of the effective date of this PFS, underlies and extends continuously, both north and south of US 6/95. For this reason, the lithium mineral resources estimated have been defined within two areas, the “North Pit” and the “South Pit”, which are located north and south of the highway, respectively. For the purpose of this PFS only the South Pit is being evaluated.

Reserves

Lock

- subscription is required.

Mining Methods

Lock

- subscription is required.

Required Heavy Mobile Equipment

Lock

- subscription is required.

Comminution

Crushers and Mills

Lock

- subscription is required.

Processing

Lock

- subscription is required.

Commodity Production

CommodityProductUnitsLOM
Lithium Hydroxide t 1,311,609 *
LiOH-H2O t 0 *
* According to 2025 study.

Operational metrics

Metrics
Annual mining rate  ....  Subscribe
Annual ore mining rate  ....  Subscribe
Annual production capacity  ....  Subscribe
Stripping ratio  ....  Subscribe
Waste tonnes, LOM  ....  Subscribe
Ore tonnes mined, LOM  ....  Subscribe
Total tonnes mined, LOM  ....  Subscribe
Tonnes processed, LOM  ....  Subscribe
* According to 2025 study.

Production Costs

CommodityUnitsAverage
Cash costs LiOH-H2O USD  ....  Subscribe
Assumed price LiOH-H2O USD  ....  Subscribe
* According to 2025 study / presentation.

Project Costs

MetricsUnitsLOM Total
Closure costs $M USD  ......  Subscribe
Total CapEx $M USD  ......  Subscribe
OP OpEx $M USD  ......  Subscribe
Processing OpEx $M USD 5,649
G&A costs $M USD 172
Total OpEx $M USD  ......  Subscribe
Income Taxes $M USD  ......  Subscribe
Gross revenue (LOM) $M USD  ......  Subscribe
After-tax Cash Flow (LOM) $M USD  ......  Subscribe
After-tax NPV @ 5% $M USD  ......  Subscribe
After-tax NPV @ 10% $M USD  ......  Subscribe
After-tax NPV @ 8% $M USD  ......  Subscribe
After-tax IRR, %  ......  Subscribe
After-tax payback period, years  ......  Subscribe

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 4, 2025
....................... Subscription required ....................... Subscription required Subscription required Dec 4, 2025
....................... Subscription required ....................... Subscription required Subscription required Dec 4, 2025
....................... Subscription required ....................... Subscription required Subscription required Dec 4, 2025
....................... Subscription required ....................... Subscription required Subscription required Dec 4, 2025

Workforce

EmployeesYear
...... Subscription required 2025

Aerial view:

Lock

- subscription is required.