Blue John Cavern

United Kingdom / England / Tideswell /
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Tours available of the cavern which is a mine for the mineral, blue john.

www.bluejohn-cavern.co.uk/

Blue John is a particular color of Fluorite chemically Ca F2. It is soft and fragile.
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Coordinates:   53°20'43"N   1°48'12"W
This article was last modified 9 years ago