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Calcite With Aragonite Over Fluorite

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Calcite With Aragonite Over Fluorite

Pseudomorph

Description Tabs

Description
Locality: 
Plaka Mines, Plaka, Lavrion District, Attiki Prefecture, Greece
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 6 × 3.5 cm
Description

What a beautiful piece of aragontie coving calcite that covers fluorite!The piece is a cluster of ball like modified rhombohedra of calcite, sugary and yellow in color, covered by contrasting white aragonite. On the back we can see a fluorite crystal that is covered by the calcite.The piece glows with backlight!No damage!

 

Mineral Data
What's on the rock

Calcite

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

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

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

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