RockWoof
Check access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.

Sketch map

Lame Jones Creek (Occurrence)Cox and Neary Ranches (Occurrence)Fallon County Bentonite Deposit (Prospect)Cox Lease + 2 more nearby (Occurrence)Cox Lease + 2 more nearby (Occurrence)
Past ProducerProducerProspectOccurrenceStatus unknown
5 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. 2 site(s) with USGS coordinates outside the outline are not pinned. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Field cards: what kind of sites?

9
Occurrence

The mineral was noted here, without development.

1
Past Producer

Produced ore or material at some point in the past.

1
Prospect

Explored or test-dug, with no recorded production.

Status terms come from USGS MRDS records.

Minerals recorded here

Tyuyamunite 1

Commodities

Uranium 10Aluminum 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Cox LeaseUraniumTyuyamuniteOccurrence46.619, -104.082
Cox and Neary RanchesUranium—Occurrence46.650, -104.079
Cox LeaseUranium—Occurrence46.606, -104.098
Stark LeaseUranium—Occurrence46.606, -104.098
Waldron LeaseUranium—Occurrence46.606, -104.098
Waldron, Cos, and Stark LeasesUranium—Past Producer46.650, -104.051
Fallon County Bentonite DepositAluminum—Prospect46.246, -104.249
Lame Jones CreekUranium—Occurrence46.215, -104.465
Cox and Neary RanchesUranium—Occurrence46.366, -104.279
WaldronUranium—Occurrence46.617, -104.065
Burmac Exploration Corp.Uranium—Occurrence46.615, -104.085

Fossil collections

The Paleobiology Database lists 7 fossil collection records in Fallon County. These are research records, not public dig sites.

Nearby counties

Wibaux County · Carter County · Richland County · Custer County · Roosevelt County

Montana mineral guides

Back to all Montana counties.

Related articles

How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.

Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.

Updated