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Blue John

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PCZ733845

Blue John

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Description
Locality: 
Castleton, Derbyshire, United Kingdom
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 4.7 × 0.8 cm
Description

Blue John is the world famous massive variety of fluorite that is now rare. This specimen is highly polished on both sides with areas of high clarity that gives the impression that it is built up of numerous layers.  An unusual and uncommon fluorite from a famous location.

 

Condition
General: 
Excellent - locality specimen
Main Display: 
Polished
Mineral Data
What's on the rock

Blue John

Variety Of: 

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Hardness: 
4.0
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