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Fluorite & Chalcopyrite

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NST646770

Fluorite & Chalcopyrite

Classic Locality

Description Tabs

Description
Locality: 
Blackdene Mine, Weardale, County Durham, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 7.7 × 5 cm
Weight: 
458.00gr
Description

Light violet cubes of fluorescent fluorite, mostly as penetration twins with minor chalcopyrite and partly covered by ankerite.

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

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0