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Blue John

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PCZ662616

Blue John

Description Tabs

Description
Locality: 
Blue John Cavern, Castleton, Derbyshire, United Kingdom
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 3 × 1.6 cm
Description

A nice representative banded specimen of the famous and much sought after 'Blue John' fluorite from Castleton, Derbyshire.

Mineral Data
What's on the rock

Blue John

Variety Of: 

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Hardness: 
4.0
Peter Crozier Minerals