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Opal Shell

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MGR921901

Opal Shell

Description Tabs

Description
Locality: 
Coober Pedy, Central North, South Australia, Australia
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2 × 2 cm
Description

Awesome example of a fossil shell from Australia which was completely replaced by colourful opal.

Mineral Data
What's on the rock

Opal

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