- Small Cabinet, 8.3 x 6.0 x 3.3 cm
- Isle Royale National Park, Lake Superior, Keweenaw Co., Michigan, USA
An very FINE, large, sliced and polished datolite nodule half from Michigan's Copper Country. This white beauty is porcelaneous and has an unusual pastel-green core with dentritic, red highlights on the edges (caused by copper, I presume). This showy piece is from Isle Royal in Lake Superior, where not too many datolite nodules have been recovered. Ex. Seaman Museum Collection.