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Hyalite

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KOV758020

Hyalite

Fluorescent

Description Tabs

Description
Locality: 
Kopasz Hill, Tállya, Zemplén Mountians, Borsod-Abaúj-Zemplén County, Hungary
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 2.4 cm
Weight: 
38.80gr
Description

Well balanced, glassy, bubbly & lustrous Opal var. Hyalite on Andesite matrix from the Tarcal quarry.

Self-collected in 2013, without demage, shows apple green fluorescence under short wave.

The crystal has extreme brightness and transparency.

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