Minnesota

 

Geological State Symbols Across America  Geology of the National Parks Through Pictures

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Minnesota State Geological Symbols
Type
Symbol
Year Est.
State Gemstone
Lake Superior Agate
1969

 

State Gemstone: Lake Superior Agate


 

References

https://statesymbolsusa.org/states/united-states/minnesota

Geology of Minnesota's National Parks

Through Pictures

(at least the one's I have been to)

 

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