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Article: The occurrence of porcelaneous datolite in michigan's lake superior copper district Part I: Northern Keweenaw County and Isle Royale National Park: eighth in a series of articles on the mines and minerals of Michigan's Copper Country.
- Article from:
- Rocks & Minerals
- Article date:
- May 1, 2003
- Author:
CopyrightCOPYRIGHT 2003 Heldref Publications. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Datolite! To many, the word conjures up images of richly colored, cut and polished nodules of a quality rivaling fine porcelain. This unique form of datolite hails from the legendary Lake Superior copper deposits, home to the world's largest occurrence of native copper. Indeed, many datolite nodules sport flecks of native copper, and specimens exist of datolite intergrown with copper crystals, but that's getting ahead of the story. Michigan's Copper Country datolite has been collected, prized, fashioned, and proudly displayed in private mineral cabinets and museums for more than 150 years. Please join me in celebrating the rich mineral heritage of the Keweenaw Peninsula's ...