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Blue John from
Blue John Mine (Blue John Cavern), Castleton, Derbyshire, England, UK

Locality type:Mine
Classification
Species:Fluorite var: Blue John
Formula:CaF2
Confirmation
Validity:Valid - Type Locality
References
References:Dewey, H., and Smith, B. (1922) Special Rep. Mineral Resources G.B. 23.
Data
Mineral Data:Click here to view Blue John data
Locality Data:Click here to view Blue John Mine (Blue John Cavern), Castleton, Derbyshire, England, UK
Nearest other occurrences of Blue John
0.4km (0.2 miles) A Treak Cliff Cavern (Treak Cliff Mine), Castleton, Derbyshire, England, UK
0.5km (0.3 miles) B Old Tor Mine, Castleton, Derbyshire, England, UK
1.6km (1.0 miles) C Wall Shaft Mine, Castleton, Derbyshire, England, UK
Mineral and/or Locality  
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