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Chalcedony

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MGR612145

Chalcedony

Description Tabs

Description
Locality: 
Mamuju Area, West Sulawesi, Indonesia
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 9.7 × 5.2 cm
Description

A very nice floater from recent discoveries in Indonesia. I show front and backside, because both sides look very different: the backside - shown on the second photo in the galery - shows a second lighter generation on darker, larger spheres of second generation. Very impressive in this size, no significant damages to report.

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