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Soft-cover edition. Also available in hardcover $125.00
Updated & Revised by George W. Robinson, Curator of the AE Seaman Mineral Museum, Houghton, MI.
By Marc L. Wilson and Stanley J. Dyl II
The Mineralogical Record volume 23, number2 – March-April 1992
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Written and Illustrated by Susan Robinson.
Premier local collecting guide published by the Copper Country Rock and Mineral Club.