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Fluorite Baryte & Laumontite

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BMM589685

Fluorite Baryte & Laumontite

Description Tabs

Description
Locality: 
Cripple Creek District, Teller County, Colorado, United States of America
Class: 
Single Crystal
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 1.5 × 1.2 cm
Description

Laumontite was replaced by barite. The (pseudomorph) laumontite doesn't exist anymore but you can see its form and its dimension. This mineral is partly overgrown by beautiful highly lustrous lila-purple fluorite crystals. The purple fluorite give a good contrast to the pseudomorphs. No significant damage to report. A niece piece from a limited discovery.

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

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White

Laumontite

Formula: 
CaAl2Si4O12·4H2O
Strunz: 
9.GB.10
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Huelgoat (Locmaria-Berrien), Finistère, Brittany, France