Beach Rocks
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![](images/Datolite/DatoliteOutside.jpg)
Datolite
Datolite is a borosilicate mineral which occurs in lava flow tops of the Keweenaw, and can be found along some shorelines and underwater. It looks rough and "brainlike" on its weathered surface, but contains smooth and colored interiors.
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![](images/Datolite/static_qr_code_without_logo 10.jpg)
The outsides of datolite nodules are very different from the insides!
![](images/Datolite/colorWeb.jpg)