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Opal

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JYJ648237

Opal

Ex. Keil collection

Description Tabs

Description
Locality: 
Roşia Montană, Alba County, Romania
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3 × 3 cm
Description

Brown to orange opal with an old label from Staatl. Mineralien-Niederlage, Freiberg. Note: Verespatak is not the correct locality, but in Hunedoara several localities exist. 

Mineral Data
What's on the rock

Opal

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