Map of Calcite onyx Locations in USA

Are you looking to go rockhounding for Calcite onyx? The United States offers 1 documented locations where you can find Calcite onyx. Explore our interactive map below to discover the best public dig sites, mines, and natural occurrences across the country.

Before heading out to these locations, ensure you verify land ownership rules and have the appropriate tools for extracting Calcite onyx. Always follow Leave No Trace principles when collecting.