RockHoundR

Where to Find Horn Coral

23 mapped horn coral spots across 4 regions in 2 countries. Pick a region for its local guide, or browse every spot below. Horn Coral 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 horn coral spot

Top regions for horn coral

United States

22 spots · 3 regions

Canada

1 spots · 1 regions

Horn Coral rockhounding FAQ

Where is the best place to find horn coral?+
Michigan, Ohio, New York have the highest concentrations of horn coral in this list. Quality and access vary by area, so open the linked region pages for a detailed view.
How many horn coral rockhounding spots does RockHoundR track?+
23 mapped spots across 4 regions in 2 countries. The app keeps these on a map alongside your private finds.
Can I legally collect horn coral on public land?+
In the U.S., casual hand collecting of common rocks and minerals like horn coral 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 horn coral in the field?+
Field identification of horn coral 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 horn coral 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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