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Chalcedony

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MGR1112353

Description Tabs

Description
Locality: 
Slanec Quarry, Košice County, Košice Region, Slovakia (Slovak Republic)
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 3.7 cm
Description

Very beautiful example of chalcedony from Slovakia. The broke open geode is filled in sky blue botryods of chalcedony that are then surrounded by a deep purple coloured layer before the bright opaque quartz make the framing.

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