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Minnesota

Cuyuna Range binghamite, Crosby

Gem locality Documented siteGray area

What you could find

Reported finds from this ground.

Agates and jasperAgates and jasper
Nails and fittingsNails and fittings
Crystals and mineralsCrystals and minerals

Also reported: binghamite, silkstone, hematite.

Photos via Wikimedia Commons: Teerui (Public domain), North Lincolnshire Museum, Martin Foreman, (CC BY 2.0), Stephanie Clifford from Arlington, VA, USA (CC BY 2.0).

Why this spot

Iron range dumps yielding binghamite and silkstone, fibrous quartz after goethite

Binghamite is a recognized Minnesota lapidary material from these dumps.

Before you go

Hazards noted for this site.

steep dumps, deep pit lakes

Keep exploring nearby

More spots in this area.

Check access and collecting rules for each site.