Where is Petoskey Stone found?
Fossilized Hexagonaria percarinata (Rugose Coral)
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Open the appPetoskey Stone occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Petoskey Stone
Lake Michigan Shorelines, Michigan, USA
Abundant along the beaches and shallow waters of Lake Michigan, particularly in the northern Lower Peninsula, including Petoskey, Charlevoix, and Traverse City areas. Wave action and ice scour continually expose new specimens.
Lake Huron Shorelines, Michigan, USA
Can also be found along the shores of Lake Huron, though generally less common than on Lake Michigan beaches.
Inland Gravel Pits and Quarries, Michigan, USA
Occasionally found in gravel pits and quarries that extract glacial deposits or Devonian bedrock in Michigan.
Collecting tips
- Search Wet. Petoskey Stones are much easier to identify when wet, as the patterns become more distinct. Search along the water's edge or carry a small spray bottle to wet potential finds.
- Look for Hexagonal Patterns. Focus on rocks with repeating hexagonal or polygonal patterns. Each hexagon should ideally have a dark center and radiating lines.
- Check Glacial Deposits. Concentrate your search in areas with glacial till, such as beaches, gravel bars, and riverbeds, where these fossils have been transported and deposited.
- Visit Designated Areas. Some beaches, like those near Petoskey, are well-known for Petoskey Stone hunting. Check local regulations regarding collecting.
Quick Check
- Color:
- Gray to brown with darker hexagonal patterns.
- Luster:
- Dull when dry, glossy when wet or polished.
- Streak:
- White (due to calcite composition).
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