Where to Find Chert
123 mapped chert spots across 30 regions. Pick a region for its local guide, or browse every spot by country below. Chert is reported at multiple rockhounding spots across the United States. The map below shows where collectors most often find it on legal public ground.
Top regions for chert
United States
123 spots · 30 regionsMap showing where to find chert, with 123 mapped spots
Every mapped chert spot
Chert rockhounding FAQ
Where is the best place to find chert?+
Michigan, Florida, New Mexico have the highest concentrations of chert in this list. Quality and access vary by area, so open the linked region pages for a detailed view.
How many chert rockhounding spots does RockHoundR track?+
123 mapped spots across 30 regions. The app keeps these on a map alongside your private finds.
Can I legally collect chert on public land?+
In the U.S., casual hand collecting of common rocks and minerals like chert is allowed on most BLM and U.S. Forest Service land, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Rules differ by country and region, so always check with the managing agency before a trip.
How do I identify chert in the field?+
Field identification of chert comes down to color, hardness, fracture, and luster. The RockHoundR app links to geology details for each spot to help narrow down what you might be picking up.
Hunt chert on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
