SK1383 : Blue John Mine - phreatic tube

taken 6 years ago, near to Castleton, Derbyshire, Great Britain

Blue John Mine - phreatic tube
Blue John Mine - phreatic tube
The caverns of Blue John mine were used by lead miners to search for minerals like lead. Blue John fluorite was found and became of value owing to its unique colours. The tubes formed much later than the mineralisation with high-pressure rivers carving and sloshing about underground, dissolving the crinoidal limestones. This is the view looking up into one of the caverns.
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SK1383, 127 images   (more nearby )
  (find more nearby)
Date Taken
Saturday, 17 November, 2012   (more nearby)
Monday, 19 November, 2012
Geographical Context
Geological interest 
Subject Location
OSGB36: geotagged! SK 1317 8314 [10m precision]
WGS84: 53:20.6996N 1:48.2186W
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