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Hyalite

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MCP738648

Hyalite

Fluorescent

Description Tabs

Description
Locality: 
Sahatany Valley, Ibity, Antsirabe II, Vakinankaratra, Madagascar
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2 × 4 × 1.1 cm
Description

An extremely rare, yellow hyalite opal aggregates, covering quartz crystals up to 4 mm on matrix from a very unusual locality for hyalite opal Sahatany Valley, Madagascar. Hyalite has a superb, bright green fluorescence under the UV light. 

Mineral Data
What's on the rock

Hyalite

Variety Of: 

Opal

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

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