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Fluorite & Sphalerite

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KFT210678

Fluorite & Sphalerite

With Antique Label

Description Tabs

Description
Locality: 
Coalcleugh Mine, West Allendale, Northumberland, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5 × 5.2 cm
Largest Crystal: 
1.40cm
Description

This specimen is out of one of the oldest mines in the district. Purple fluorite with gemmy edges and white centers. The crystals show a very good lustre and very good quality. Only small chipping. Some small sphalerite is also present. The fluorite shows a good fluorescent under longwave. This specimen includes 2 original labels - one from watzlminerals and one of austrias most known mineral collector Anton Berger. Anton Berger lived from 1870-1956 his son from 1901-1956. All pictures were shot by daylight. The colour is more purple than blue!!

Mineral Data
What's on the rock

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0