Datolite Arcadiian Mine 3525
This is a Copper filled Datolite from the Arcadian Mine, Houghton County.
The copper, heavier on the inside edges shows when the pieces are moved in the light
This piece measures approximately 32mm h x 20mm w x each piece ~10mm d.
Datolite nodules have been found on the Keweenaw Peninsula and the North Shore of Minnesota. This form is unique to the area