Location: Cave-In-Rock Sub-District, Hardin Co., USA

Pure fluorite is comprised of the elements calcium (Ca) and fluorine (F) and is colorless. The various colors result from tiny amounts of other elements substituting for the calcium in the crystalline structure.

Since the early 1800s, fluorite has been mined in southeastern Illinois. The fluorspar-rich region, which reaches from southeastern Illinois into parts of Kentucky, was called the Illinois-Kentucky Fluorspar Mining District. The last fluorspar mine in Illinois closed in December 1995. Fluorspar is no longer mined anywhere in the United States.

Prices for Illinois Fluorite have gone up substantially and it is becoming hard to add a nice piece to your collection.

Size: 5 x 3.8 x 2.8 inches