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Cristobalite

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SMM876106

Cristobalite

Description Tabs

Description
Locality: 
Conca Cannas Quarry, Masullas, Oristano Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1 cm
Description

Many, white spherical groups of cristobalite crystals, are scattered in the vugs of the volcanic matrix. 

Boxed with Label
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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