Project overview

The Basin Gulch property, Montana

Last updated: November 2026

The Basin Gulch property is a gold and silver exploration project in west-central Montana, explored by Lannister Mining.

Lannister Mining describes Basin Gulch as primarily patented land with near-surface, oxide-hosted gold-silver mineralization and more than 320 historical drill holes. The mineralization is open at depth, along strike and untested regionally, and two-thirds of the 1,107 hectare property is still unexplored.

What makes the Basin Gulch property in Montana stand out?

Basin Gulch combines a large historical drilling record with ground that is mostly untested. Lannister Mining reports more than 320 historical drill holes, mineralization that starts at surface in several highlight holes, and a patented land core, all in a district with a long mining history.

The company states that the property has potential to host a significant maiden mineral resource estimate after expansion and confirmation drilling of historical drill intercepts. That is a forward-looking goal, not an existing resource.

Geology

Near-surface, oxide-hosted gold and silver

Lannister Mining reports high grade gold-silver (Au-Ag) mineralization near surface at Basin Gulch, hosted in oxides. Three of the five reported drill highlights start from surface, including 1.8 g/t Au over 162 meters and 0.66 g/t Au over 326 meters.

The company notes that near-surface mineralization gives significant implied flexibility for future mine design optimization. Any such design would depend on a resource estimate and technical studies that have not yet been completed.

Land

A patented core with an unpatented surround

The property is underlain by a core of patented mining claims surrounded by unpatented mining claims. The total land package is 11 patented claims and 53 unpatented claims, covering 1,107 hectares.

Lannister Mining describes it as a large, highly prospective consolidated land package with multiple high priority targets near the historic resource. See the land package details.

Numbers

Property facts at a glance

historical drill holes: 320+; historical drill holes
claims in total (11 patented, 53 unpatented): 64; claims in total (11 patented, 53 unpatented)
land package: 1,107 ha; land package
of the property unexplored: 2/3; of the property unexplored

Montana: the Treasure State

Montana is known as the Treasure State because of its vast mineral wealth and a history built on mining, and the industry still plays an active role in the state economy. The first gold discovery in the Montana territory occurred in 1852 at Gold Creek, near present-day Garrison. Since then silver, copper, nickel and platinum have all been discovered and mined in the state.

Basin Gulch sits in the heart of the historic Philipsburg Mining District, which led the original United States silver boom in the late 1800s. Lannister Mining describes the location as a safe jurisdiction. For background on Montana geology and mining districts, the Montana Bureau of Mines and Geology publishes public maps and reports.

Lannister Mining map of Montana showing where the Basin Gulch property sits in the west-central part of the state — Montana location map published by Lannister Mining.

Explored and unexplored ground at Basin Gulch

Basin Gulch property status by area, as reported by Lannister Mining
Area	Share of property	What is known
Historically explored ground	About one-third	More than 320 historical drill holes and trench sampling; mineralization open at depth and along strike
Unexplored ground	Two-thirds	Untested regionally; multiple high priority targets near the historic resource

Back to the Basin Gulch drill holes overview

Read the Basin Gulch investor briefing

Lannister Mining's June 2026 investor presentation goes deeper into the project than this site. It is published on the company's Invest page for investors and exploration partners.

Investor presentation (PDF)Lannister Mining Invest page

Questions about the Basin Gulch property

What is the Basin Gulch property?: Basin Gulch is a gold and silver exploration property in west-central Montana explored by Lannister Mining. It sits primarily on patented land, its mineralization is hosted in oxides near surface, and more than 320 historical drill holes have been completed there. The land package covers 11 patented and 53 unpatented mining claims totaling 1,107 hectares.
What does oxide-hosted gold mean?: Oxide-hosted gold sits in rock that has been weathered and oxidized, usually close to the surface. Across the industry, oxide material is often considered simpler to process than deeper sulfide material, but that must be confirmed by metallurgical testing for each deposit. Lannister Mining reports that the Basin Gulch mineralization is hosted in oxides.
Is Basin Gulch an operating mine?: No. Basin Gulch is an exploration property, not an operating mine. Lannister Mining states that the property has not been mined out, and that historical drilling combined with new work programs will be used in a future maiden mineral resource estimate. This site does not present any current mineral resource for the property.
Why is Montana called the Treasure State?: Montana is known as the Treasure State because of its wealth of mineral resources and a history built on mining. The first gold discovery in the Montana territory occurred in 1852 at Gold Creek, near present-day Garrison. Silver, copper, nickel and platinum have since been discovered and mined in the state.
What is the Philipsburg Mining District known for?: The Philipsburg Mining District in west-central Montana led the original United States silver boom in the late 1800s. Basin Gulch sits in the heart of this historic district, which Lannister Mining describes as a safe jurisdiction for exploration.
Is the Basin Gulch mineralization open?: Yes. Lannister Mining reports that the gold-silver mineralization at Basin Gulch is open at depth, open along strike and untested regionally. In exploration terms, open means drilling has not yet found the edge of the mineralization in those directions, so further drilling could extend it.

See all Basin Gulch questions and answers