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Chalcedony

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Chalcedony

Description Tabs

Description
Locality: 
Pedn Boar, St Keverne, Cornwall, United Kingdom
Size Range: 
Cabinet (10-18 cm)
Size: 
8 × 10 × 5 cm
Description

Beautiful specimen of contorted pale pink chalcedony coated with a second generation of micro crystalline quartz.

Collected in the 1990's this specimen is by far the best I've seen from this location.

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