Calcium Fluoride Collection

Minerals, Blue John or Derbyshire Spar, surface of un-polished piece of fluorite mineral, from Blue John Cavern, Derbyshire, England

Fluorspar crystals C013 / 9775
Fluorspar crystals. Fluorspar or fluorite (calcium fluoride, CaF2) is a mineral that is mined for use as a flux in making steel, and in other industrial processes

Blue John vase C013 / 6643
Blue John vase. Vase made from blue John, a compact banded variety of fluorite (calcium fluoride) found only in Castleton, Derbyshire, UK

Fluorite (CaF2-calcium fluoride) fluorite (green) is one of the most popular minerals among collectors - Mineral class
CAN-4369 Fluorite (CaF2-calcium fluoride) fluorite (green) South Africa Fluorite (CaF2-calcium fluoride) fluorite (green) is one of the most popular minerals among collectors - Mineral class

X-ray viewing machine, 1895
X-ray viewing machine. Historical artwork of the fluoroscope designed and built by the French inventor Eugene Ducretet (1844-1915)

Blue fluorite from Derbyshire, UK

Fluorite. The specimens at bottom right and middle right are in their natural form, the specimen at centre had been polished and all the other specimens have been cut and polished

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