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MN-97-13-SC Iron stained calcite veins and assorted volcanic pebbles on the North Shore of Lake Superior,Minnesota
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Volcanic Pebbles and Calcite Veins

North Shore of Lake Superior, Minnesota

MN-97-13-SC
Iron stained calcite veins and assorted volcanic pebbles on the North Shore of Lake Superior,Minnesota. Photo © copyright by Gary Alan Nelson.

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