A group of tan fluorite crystals in a vug. This piece pretty much contains the entire exposed half of the pocket, as it was unearthed by the field collector, though the matrix is repaired and there are a few scuffs on the crystals.
With that said, this is an exceptionally rare Michigan fluorite specimen-- you see plenty of fluorite from neighboring Ohio, occasional pieces from Indiana, and even from Ontario, near the border.... but Michigan fluorite just isn't common.