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Opal

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CFL671560

Opal

Description Tabs

Description
Locality: 
Carbonera Mine, La Trinidad, Tequisquiapan, Queretaro, Mexico
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 4 × 3.4 cm
Weight: 
65.00gr
Description

Nodules of fire opal in rhyolitic matrix from this classic Mexican locality for the species.  Ex-Lucien Rivest specimen (label).

Mineral Data
What's on the rock

Opal

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

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