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Armalcolite-Pseudobrookite Series Enstatite & Tridymite

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TPX213901

Armalcolite-Pseudobrookite Series Enstatite & Tridymite

Description Tabs

Description
Locality: 
La Aljorra Quarries, La Aljorra, Cartagena, Murcia, Spain
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.3 × 0.9 cm
Description

Interesting sample of these rare minerals on a lamproitic matrix.

Mineral Data
What's on the rock

Enstatite

Formula: 
MgSiO3
Group Parent: 
Orthopyroxene Subgroup
Strunz: 
9.DA.05
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
5.0 - 6.0

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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