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Hyalite Opal On Aragonite

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PCZ179176

Hyalite Opal On Aragonite

Description Tabs

Description
Locality: 
Kopasz Hill, Tállya, Zemplén Mountians, Borsod-Abaúj-Zemplén County, Hungary
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 4 cm
Description

A rare association from a very rare location. Bubbly water clear hyalite opal on snow white aragonite. One from my own collection and surely a must for the opal collectors.

Mineral Data
What's on the rock

Hyalite

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
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
Peter Crozier Minerals