blue john
a blue or purple fibrous variety of fluorspar occurring only in Derbyshire: used for vases, etc
Words Nearby blue john
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use blue john in a sentence
The opening of their mine has been called blue john Gap, a clean-cut arch in the rock, the mouth all overgrown with bushes.
The Last Galley | Arthur Conan DoyleI had not told anyone that I proposed to come to the blue john mine, and it was unlikely that a search party would come after me.
The Last Galley | Arthur Conan DoyleThe most beautiful are those made of fluor-spar, the celebrated blue john Mine providing the most beautiful specimens.
Chats on Household Curios | Fred W. BurgessThere are also spar works where the fluor-spar, or blue john, is wrought into a variety of useful and ornamental articles.
Twenty-nine of the choicest warriors instantly volunteered to follow blue john in this hazardous enterprise.
The Adventures of Captain Bonneville | Washington Irving
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