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Chalcedony & Cristobalite

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SHS602037

Chalcedony & Cristobalite

ex. Collection Edgar Franz (Freiberg/Saxony)

Description Tabs

Description
Locality: 
Basalt Quarry, Weitendorf, Leibnitz District, Styria, Austria
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 6 × 3 cm
Description

Nice chalcedony and cristobalite on matrix

Mineral Data
What's on the rock

Chalcedony

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Kadıköy (Chalcedon), Istanbul Province, Marmara Region, Turkey

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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