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Siderite Psm Aragonite On Galena

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PDM661188

Siderite Psm Aragonite On Galena

Classic Locality

Description Tabs

Description
Locality: 
Banská Štiavnica, Banská Štiavnica County, Banská Bystrica Region, Slovakia (Slovak Republic)
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.8 × 5.8 × 3.1 cm
Largest Crystal: 
0.90cm
Description

Brown lustrous microcrystals of siderite replacing elongated crystals of aragonite. Some white secondary aragonite bundles developed on this pseudomorph. The matrix is a block of crystallized galena. Uncommon species from a Classic European locality.

Acquired in 1978; Ex. Gerard Vogel specimen.

Mineral Data
What's on the rock

Siderite

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

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

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