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Chalcedony

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MGR768490

Chalcedony

Classic Locality

Description Tabs

Description
Locality: 
Hüttenberg, Sankt Veit an der Glan District, Carinthia, Austria
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
11.3 × 6.3 × 4.3 cm
Description

Hüttenberg is an old, historic mining area – iron was mined there. Really of relevance in it´s history – ever heard about boric iron? The high quality iron (ferrum noricum) , which was used for Roman Army came from Hüttenberg and Erzberg. First mentioned in old documents from 1266! But we know about mining even before the old Romans, so this is really a historic locality. Now more about this excellent specimen: It is developed as floater and consists of numerous calcite scalenohedrons, which were all completely replaced by chalcedony. The chalcedony shows different steps of color - from very light to shades of blue. Complete all around, 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