Greenstone belts

Results: 11



#Item
11Isle Royale National Park / Copper / Gemstones / Greenstone belts / Isle Royale / Minong Mine Historic District / Native copper / Chlorastrolite / Calumet and Hecla Mining Company / Crystallography / Silicate minerals / Matter

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Source URL: www.michigan.gov

Language: English - Date: 2012-12-07 11:56:42
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