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Opal

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ESM859251

Opal

Description Tabs

Description
Locality: 
Boi Morto Mine, Pedro II, Piauí, Brazil
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 1.5 cm
Description

Multi colored opal layers in matrix

Mineral Data
What's on the rock

Opal

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