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fluorite
(redirected from Bluejohn)

    Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.

fluorite

Glassy, brittle halide mineral, calcium fluoride CaF2, forming cubes and octahedra; colourless when pure, otherwise violet, blue, yellow, brown, or green.

Fluorite is used as a flux in iron and steel making; colourless fluorite is used in the manufacture of microscope lenses. It is also used for the glaze on pottery, and as a source of fluorine in the manufacture of hydrofluoric acid.



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? Mentioned in ? References in periodicals archive
 
and Asprey's auction house which lost a pair of [pounds sterling]60,000 Bluejohn Cassolette vases.
Adams' cave of stolen art and treasures by The Evening Standard (London, England)
discovered during a solo trek through the Bluejohn Canyon on Saturday, April 26, last year.
THE MAN WHO CUT OFF HIS OWN ARM; Trapped under a rock for five days, ... by The Daily Mail (London, England)
pinned under a boulder in nearby Bluejohn Canyon, was hacking through his wrist with a knife.
Adventurers face risk, even with gadgets by Andrews, Paul / The Seattle Times (Seattle, WA)
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