Explore / North America / Ontario
Ontario
Craigmont Corundum Mine, Combermere
Gem locality Documented siteGray area
What you could find
Reported finds from this ground.
Crystals and mineralsAlso reported: plus feldspar and mica.
Photos via Wikimedia Commons: Stephanie Clifford from Arlington, VA, USA (CC BY 2.0).
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Why this spot
Grenville nepheline syenite
Once the largest corundum mine in the British Empire; abrasive-grade corundum.
Keep exploring nearby
More spots in this area.