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Tridymite

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SLN528719

Tridymite

Description Tabs

Description
Locality: 
Funtanafigu Quarry, Marrubiu, Oristano Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.4 × 9.5 × 8.9 cm
Weight: 
461.00gr
Description

Interesting specimen from Sardinia of tridymite in a myriad of laminar pseudohexagonal crystals of a beautiful creamy orange color in graduated shading. The name trydimite comes from the Greek "Tridymos" , triplet, alluding to its common twinning as trillings.

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

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