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Chalcedony

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BMM722180

Chalcedony

Description Tabs

Description
Locality: 
Jawa Tengah Province, Java, Indonesia
Class: 
Massive/Crystalline
Size Range: 
Cabinet (10-18 cm)
Size: 
10.5 × 2.8 × 1.7 cm
Description

This kind of chalcedony is also known as "Fossil Bamboo". There are different opinions about the genesis: some think it is chalcedony which represents overgrowths of iron oxide rhizolite. Others say it is agate casts after a variety of marsh grasses or other wetland plant stems. However, the chalcedony (or agate) is unusual and impressive. Finger-shaped agate with great construction and shine. The agate fingers are transparent in the outer area. This piece comes out of its pocked unharmed and in perfect condition.

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
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