What is the definition of Blue-john? | Dictionary.net

BLUE-JOHN

\blˈuːd͡ʒˈɒn], \blˈuːd‍ʒˈɒn], \b_l_ˈuː_dʒ_ˈɒ_n]\

Definitions of BLUE-JOHN

2010 - New Age Dictionary Database
1913 - Webster's Revised Unabridged Dictionary
1895 - Glossary of terms and phrases

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A name given to fluor spar in Derbyshire, where it is used for ornamental purposes.

2010 - New Age Dictionary Database
By Oddity Software

A name given to fluor spar in Derbyshire, where it is used for ornamental purposes.

1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.

The blue variety of fluor-spar.

1895 - Glossary of terms and phrases
By Henry Percy Smith

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