|AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Michigan > Datolite
|Keweenaw Peninsula Copper District, Michigan
|Polished nodule of datolite. The copper color is due to minute hematite and copper inclusions, invisible with the naked eye, but apparent under magnification. A classic specimen - see latest Rocks and Minerals magazine. Ex. Ken Hogan collection
|For reference only
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