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Opal

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PDM578355

Opal

Description Tabs

Description
Locality: 
Roßdorf, Odenwald, Hesse, Germany
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.3 × 6 × 6 cm
Description

Nodular opal inclusion to 28mm in diameter, in basal from a quarry near Rossdorf (Darmstadt). Ex Arnaud Gelders specimen.

Mineral Data
What's on the rock

Opal

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

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