Datolite
Michigan Mine, Rockland, Ontonagon County, Michigan, USA
This is another example of what I call an "ugly" datolite. It really has no great colouration, no unique features, nothing that really grabs your attention. Still, it is a fine example of the typical datolite that can be found on the waste rock piles scattered throughout the Keweenaw Peninsula of Upper Michigan. This specimen was discovered in ...