Datolite, Centennial Mine No. 1/2, Lake Superior Copper District, Houghton County, Michigan, ex. Jim Bailey Collection #332, Miniature 5.5 cm x 8.5 cm, $250. Online July 15
$250.00
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Cut and polished datolite slab with intense green and blue coloration against a white background. This is the richest colored datolite I have seen from the Centennial Mine.
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