Where to Find Chert in Wyoming
Wyoming has 5 mapped collecting spots that report chert, spread across 2 counties. The largest share sits in Sweetwater County with 4 spots. 5 of the spots are on land mapped as publicly accessible.
Spot list checked against source data on April 1, 2026.
Every chert spot we track in Wyoming
Best spotKemmererLincoln County, WyomingPublic access · Turritella Agate, Chalcedony, Chert +4
Sweetwater CountySweetwater County, WyomingPublic access · Agate, Chalcedony, Chert +5- FarsonSweetwater County, WyomingPublic access · Agate, Chalcedony, Chert +3
- Red DesertSweetwater County, WyomingPublic access · Agate, Chalcedony, Chert +3
- Rock SpringsSweetwater County, WyomingPublic access · Agate, Chalcedony, Chert +3
Standout chert spots in Wyoming
Hand-picked from the full list above, with the reason each one earns a trip.
Best counties for chert in Wyoming
Ranked by the number of mapped chert spots. County links open the full rockhounding page for that county.
Before you go
Read the chert identification guide so you know what a keeper looks like in the field: Chert in the encyclopedia.
Chert in Wyoming FAQ
Where can you find chert in Wyoming?+
The mapped spots concentrate in Sweetwater County and Lincoln County. Every spot on this page is on the map, and each spot's own page has its coordinates and access notes.
How many chert spots are mapped in Wyoming?+
5 spots across 2 counties. The RockHoundR app keeps the same spots on an offline map with public land overlays, geology layers, and your saved finds.
Is it legal to collect chert in Wyoming?+
Hand collecting of common rocks and minerals in small amounts for personal use is generally allowed on BLM and U.S. Forest Service land, with limits set by the local field office. National parks, most state parks, and tribal land are closed to collecting. 5 of the 5 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.
Where else to find chert
More minerals to hunt in Wyoming
Hunt chert in Wyoming with the map in your pocket
RockHoundR puts these spots on an offline map with BLM and Forest Service overlays, geology layers, and a log for your finds.
