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Marcasite Adularia & Quartz

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SCH36041

Marcasite Adularia & Quartz

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Description
Locality: 
Valenciana Mine, Guanajuato, Guanajuato Municipality, Guanajuato, Mexico
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 2.6 × 5.1 cm
Description

A plate of sharp, white slightly-curved adularia crystals variety valencianite hosts several quartz crystals. There is a scattering of brassy marcasite balls through the piece.

A striking and aesthetic specimen!

Mineral Data
What's on the rock

Marcasite

Formula: 
FeS2
Strunz: 
2.EB.10a
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5

Adularia

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic
Hardness: 
6 Ortho - clase

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
schani

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