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Fluorite Galena & Sphalerite

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CLB505116

Fluorite Galena & Sphalerite

Classic Locality

Description Tabs

Description
Locality: 
Cave In Rock District, Illinois, United States of America
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.8 × 7 × 6.7 cm
Largest Crystal: 
1.70cm
Description

Lead-gray galena cube on purple fluorite crystals with minor brown sphalerite on the base and bottom of the specimen (not pictured). Only a few minor dings - not in main view. A very attractive specimen.

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

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

Sphalerite

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

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