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Chalcedony

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PCZ585007

Chalcedony

Description Tabs

Description
Locality: 
Iraí, Rio Grande do Sul, Brazil
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 4 × 2 cm
Description

An attractive chalcedony 'rose' with blue/gray banding on one side, while on the other there is sparkling crystallisation.

Mineral Data
What's on the rock

Chalcedony

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Kadıköy (Chalcedon), Istanbul Province, Marmara Region, Turkey
Peter Crozier Minerals