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VIRTUAL FIELD TRIP TO THE KEWEENAW PENINSULA, MICHIGAN -  ORE FORMATION II     

 

 

Copper has totally filled the vesicles in the top of a basalt flow. Seaman museum specimen Specimen from the top of a basalt flow showing amygdaloids filled with calcite (white) and adularia (red). Wolverine #4, specimen is 5 cm. across.