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Hyalite

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NST638158

Hyalite

With Antique Label

Description Tabs

Description
Locality: 
Komorní Hůrka, Františkovy Lázně, Cheb, Karlovy Vary Region, Czech Republic
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5 × 3.5 cm
Description

This is a historic sample of thin coating of hyalite on basaltic matrix from Komorní hůrka (Kammerbühl), a volcanic cone close to the city of Františkovy Lázně (Franzensbad). Comes with an antique handwritten label.

Mineral Data
What's on the rock

Hyalite

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white
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