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Opal & Aragonite

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SHS178806

Opal & Aragonite

Description Tabs

Description
Locality: 
Kaiserstuhl, Baden, Baden-Württemberg, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 3.3 × 1.4 cm
Description

Nice glassopal, green under sw uv light on blue under sw aragonite

Mineral Data
What's on the rock

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
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