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Chalcedony

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MXS825975

Chalcedony

With Antique Label

Description Tabs

Description
Locality: 
Catalán Grande, Artigas Department, Uruguay
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4 × 2.5 cm
Description

This old specimen is very uncommon for Catalan Grande. Usually this region is famous for big amethyst and calcite geodes. Chalcedony from there is not very common and especially not in this superb shape.

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