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Opal

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PDM648672

Opal

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Description
Locality: 
Acari Mine, Caraveli Province, Arequipa, Arequipa Department, Peru
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5 × 2.8 cm
Description

A thick specimen of translucent Andes opal with intense blueish-green colour with nice black dendritic inclusions.

Acquired in 2012, it is an Ex. A.Gelders #727.

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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