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Fluorite Galena & Quartz

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KFT48717

Fluorite Galena & Quartz

Description Tabs

Description
Locality: 
Hill-Ledford Mine, Cave-in-Rock, Hardin County, Illinois, United States of America
Size Range: 
Cabinet (10-18 cm)
Size: 
10.1 × 4.5 × 4.2 cm
Largest Crystal: 
3.00cm
Description

On a matrix of small quartz are sitting some glossy crystals of galena and fluorite. The big on is very good and shows a dark violet color.

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White