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Opal

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QRI963343

Opal

Former collection Christian Mavris
Classic Locality

Description Tabs

Description
Locality: 
Case Montanini Quarry, Sant'Andrea Bagni, Parma Province, Emilia-Romagna, Italy
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
14.1 × 9.5 × 4 cm
Largest Crystal: 
0.30cm
Weight: 
745.00gr
Description

Choice, significant plate featuring over two dozens of opal-CT spheres nicely laid on diatomite matrix. One of the richest specimens ever recovered from the area, it is over 15 years old. 

It comes from a now defunct locale, a quarry which is undergoing environmental recovery, therefore new finds are practically impossible.

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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