RockHoundR

Where to Find Chert

127 mapped chert spots across 32 regions in 2 countries. Pick a region for its local guide, or browse every spot 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.

Open the full map

Every mapped chert spot

Top regions for chert

Canada

2 spots · 2 regions

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?+
127 mapped spots across 32 regions in 2 countries. 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.

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