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Cristobalite

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CR177873

Cristobalite

Description Tabs

Description
Locality: 
In der Ahl Quarry, Hochsimmer Volcano, Mayen-Koblenz, Rhineland-Palatinate, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 3 × 2 cm
Description

Sharp white cristobalite crystals with gemmy white sanidine crystals and green augite crystals.

Ex Dr. Hartmann collection

Mineral Data
What's on the rock

Cristobalite

Formula: 
SiO2
Strunz: 
4.DA.15
Crystal System: 
Tetragonal - Trapezohedral
Hardness: 
6.0 - 7.0
Streak: 
White
Type Locality: 
Cerro San Cristóbal, Mun. de Pachuca, Hidalgo, Mexico
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