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Tridymite Cordierite & Ilmenite

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MEX153483

Tridymite Cordierite & Ilmenite

ex Krantz, Bonn
Classic Locality

Description Tabs

Description
Locality: 
Vechec, Vranov nad Topľou County, Prešov Region, Slovakia (Slovak Republic)
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.9 × 2.9 × 3.4 cm
Description

Rich specimen with hexagonal tridymite crystals and black metalic lustrous ilmenite crystals. I find one cordierite crystal, perhaps here are more. Without an older label.

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

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

Ilmenite

Formula: 
Fe2+TiO3
Strunz: 
4.CB.05
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
5.0 - 6.0
Type Locality: 
Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...