Fluorite from Illinois

Out of stock
Quick Overview

This is easily one of our favorite Fluorite specimens we have carried in the store! The color and clarity are exceptional! This cluster consists of two main fluorite crystals that intersect, both showing light blue, pastel purple and soft yellow hues. While the terminations and facets do have some minor chipping, the layered "phantoms" of color still make this a high-quality addition to any collection. 

Measurements: ~5" long x 4" wide x 3-1/2" tall 

Location: Cave in Rock, Hardin County, Illinois

More Information

Fluorite is the "State Mineral" of Illinois. Fluorite forms in a variety of colors and is transparent to translucent in clarity. The chemical composition of Fluorite is CaF2, (calcium & fluorine.) The variation in colors are due to trace amounts of other elements replacing the calcium during the crystalline formation. 

Fluorite is used in a variety of industrial purposes and the overwhelming percentage of Fluorite in the United States was mined in Illinois and Kentucky. Illinois became the leading Fluorite producer in the early 1940's, but during the 1990's, 90% of the U.S. Fluorite was imported with Illinois remaining the last U.S. producer.

Fluorite was was mined deep underground with many of the mines over 1,200 feet deep. The last Illinois mine was capped and flooded in 1995.