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Fluorite Chalcopyrite & Calcite On Sphalerite

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RHT732667

Fluorite Chalcopyrite & Calcite On Sphalerite

Classic Locality

Description Tabs

Description
Locality: 
Gibraltar Mine, Naica, Chihuahua, Mexico
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.2 × 3 cm
Weight: 
58.00gr
Description

A very nice waterclear, 'facetted' looking (chamferred adges) fluorite crystal with golden chalcopyrite and some minor calcite crystals on a group of glossy black sphalerite crystals.

The fluorite crystal is very sharp and looks great in nature. The photos don't do it justice.

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Sphalerite

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