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Cordierite & Tridymite

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SLN525707

Cordierite & Tridymite

Description Tabs

Description
Locality: 
Funtanafigu Quarry, Marrubiu, Oristano Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
6 × 7.5 × 6.8 cm
Weight: 
296.00gr
Description

Nice piece from Fontanafigu Quarry with a lot of prismatic hexagonal cordierite crystals in a beautiful orange-red color in association with caramel tridymite, a rare high-temperature quartz

Mineral Data
What's on the rock

Cordierite

Formula: 
(Mg,Fe)2Al3(AlSi5O18)
Strunz: 
9.CJ.10
Crystal System: 
Orthorhombic
Hardness: 
7.0 - 7.5
Type Locality: 
Großer Arber, Bayerisch Eisenstein, Lower Bavaria, Bavaria, Germany

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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