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Opal

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SHS118322

Opal

Description Tabs

Description
Locality: 
Fekete Hill, Bózsva, Zemplén Moutains, Borsod-Abaúj-Zemplén County, Hungary
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 1.7 × 1.7 cm
Description

Nice piece of brown opal

Mineral Data
What's on the rock

Opal

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