Here's a nice little translucent specimen of porcelaneous Datolite from the Keweenaw Peninsula of Michigan. Self-collected. (approx. size .75" x .5") #lakesuperior, #michigan, #puremichigan, #rocks&minerals, #datolite, #photography, #yooper, #copperminerals, #upperpeninsula

Here are two halves of a porcelaneous Datolite double nodule specimen from the Keweenaw Peninsula of Michigan. Self-collected many years ago. (approx. size 1.5" x 1.125") #lakesuperior, #michigan, #puremichigan, #rocks&minerals, #datolite, #photography, #yooper, #copperminerals, #upperpeninsula