American Tungsten & Antimony (ASX:AT4) advances Tennessee Mountain drill targets
May 27, 2026American Tungsten & Antimony has reported new soil, rock chip and channel sampling results from the Tennessee Mountain Tungsten Project in Elko County, Nevada, which have defined a broad tungsten anomaly across the project area and confirmed high-grade tungsten mineralisation at surface at the historic Garnet Mine.
The results support the company’s planned maiden drill program, which is designed to test extensions to known tungsten mineralisation beyond the historic workings and generate a modern exploration dataset for the project.
Highlights
- System-scale tungsten soil anomaly defined across Tennessee Mountain
- High-grade surface tungsten confirmed at the historic Garnet Mine
- Peak rock chip result of 20,693 ppm Mo at the historic Garnet Mine
- Maiden 29-hole, ~3,000m drill program designed to test depth and lateral extensions of the skarn system
- Pre-drill geological work, permitting progress and program planning underway
Recent rock chip and channel sampling at the Tennessee Mountain Tungsten Project returned tungsten and molybdenum mineralisation at surface at the Garnet Mine area.
Assay results included sample 1080548 returning 4,713 ppm W (0.59% WO₃) over 1.0m and sample 1080550 returning 4,191 ppm W (0.53% WO₃) over 2.0m from outcropping skarn, while the company also reported a peak rock chip result of 20,693 ppm Mo (2.07% Mo), with three further samples grading between 2,055 ppm and 4,352 ppm Mo.
The announcement also outlined soil geochemistry results across Tennessee Mountain, where a total of 246 soil samples were collected on a 200m × 200m grid covering approximately 2.2km east-west and 5.8km north-south.
Against a median background of approximately 4 ppm W, 39 samples returned greater than 10 ppm W. Peak soil results included approximately 257 ppm W, 73 ppm W, 67 ppm W and 63 ppm W.
The anomaly remains open along the contact to the north and south, with elevated tungsten values approaching the limits of the current survey grid.
AT4 stated that the maiden drill program has been designed to test the depth and lateral extensions of scheelite skarn mineralisation along the Coffeepot granodiorite/limestone contact at the Garnet Mine, also referred to as the Tennessee Mountain Mine, in the Alder Mining District, Elko County, Nevada.
The Phase 1 program will consist of 29 holes across approximately 3,000m and is intended to generate a modern, JORC-compliant dataset to support the potential definition of a future Mineral Resource, with planned drilling to test mineralisation in the immediate vicinity of the historic Garnet Mine workings, test soil and rock chip anomalies beneath historic workings, and target depth extensions where skarn remains open.
American Tungsten & Antimony Managing Director Andre Booyzen said the results supported the geological model ahead of drilling.
“These results are encouraging and support the geological model underpinning our maiden drill program. The combination of tungsten and elevated molybdenum at surface is consistent with a fertile W-Mo skarn system and is suggestive of proximity to an intrusive source.”
The company said it is actively advancing the Tennessee Mountain Tungsten Project towards its maiden drill program, with planned work programs including a pre-drill geological field program comprising systematic infill soil sampling to refine targets outside the Phase 1 drill program, along with preparation and submission of a Plan of Operations to the US Forest Service, which is required to authorise drilling activities on USFS-administered land.
AT4 said it anticipates providing further newsflow on permitting progress and program planning in the coming months, with drilling activities subject to receipt of required approvals prior to commencement.
Tennessee Mountain is part of American Tungsten & Antimony’s tungsten project portfolio in Nevada, with planned or underway work programs including a pre-drill geological field program, permitting progress and program planning related to the maiden drill program.
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