DATOLITE CaBSiO4(OH) Monoclinic

Description: Datolite is a low temperature hydrothermal mineral found in cavities and veins, especially in basalts and gabbros.

DOUGLAS COUNTY: White fine-grained granular aggregates of datolite, reminiscent of those from Michigan's Keweenaw Peninsula, occur on prehnite in veins cutting gabbro in the Buckley Quarry near Amnicon Falls (NW Sec. 32 T.48N R.12W) (Cordua, 1991).

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