Fluorite, Sphalerite, Baryte: Minerva #1 mine, Cave-in-Rock, Hardin County, Illinois, USA

Species: Fluorite, Sphalerite, Baryte

Locality: Minerva #1 mine, Cave-in-Rock, Hardin County, Illinois, USA

Size: 9 x 7.5 x 4 cm.

Gorgeous cluster of very gemmy, light sky-blue fluorite crystals to ~3 cm. on contrasting black sphalerite and white baryte matrix from the famous Minerva #1 mine in southern Illinois. Beautiful color (better in person!) and good transparency make this a very nice fluorite for the locality. Mark Cross photo.