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Siderite Chalcedony & Calcite

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MGR508658

Siderite Chalcedony & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Hüttenberg, Sankt Veit an der Glan District, Carinthia, Austria
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.8 × 6.4 × 6 cm
Description

Intergrown siderite crystals form a very tridimensional assemble. These siderite crystals are covered by botryoidal light blue chalcedonia. And as special feature some tiny sparkling calcite crystals are grown along some edges and faces. Huettenberg is a classic historic locality and material from there is very rare and hard to obtain. Specimen is undamaged, bottom was on the rock.

Mineral Data
What's on the rock

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White