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Tridymite

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UVM571093

Tridymite

Description Tabs

Description
Locality: 
Big Lue Mountains, Greenlee County, Arizona, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 3 × 2.1 cm
Description

Sharp tridymite in vuggy rhyolite matrix.   Nearly every vug contains tridymite crystals.    A fine example of this high temperature polymorph of quartz.  

Mineral Data
What's on the rock

Tridymite

Formula: 
SiO2
Strunz: 
4.DA.10
Crystal System: 
Triclinic - Pedial
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Cerro San Cristóbal, Mun. de Pachuca, Hidalgo, Mexico

Seller Information

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