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Blue John

Big Photo

Castleton, Derbyshire, England, UK
© J.Ralph 2006

Show Blue John Photos (6)
A variety of Fluorite

A banded white/purple variety of fluorite applied by locals in England.
Originally described from Castleton, Derbyshire, England, UK.

Classification of Blue John

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Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Blue John

Reference List:Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 29.

Internet Links for Blue John

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  • Rare and Unusual minerals at Mineralogical Research Company
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    Localities for Blue John

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    UK
     
    • England
      • Derbyshire
    		No reference listed
    [www.thamesvalleyminerals.com]
    Fluorite: The Collector's Choice. Extra Lapis English No. 9
    Mineral and/or Locality
    Google
     
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    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.