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Fluorite & Goethite Psm Siderite

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PCZ211576

Fluorite & Goethite Psm Siderite

Description Tabs

Description
Locality: 
Trough Mine, Harwood In Teesdale, County Durham, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.3 × 2 cm
Description

20% reduction. The main crystal os a colourless and glassy fluorite cube to 7 mm on an edge, with goethite after oxidised siderite. A nice little specimen from a rarely seen North Pennines location.

Mineral Data
What's on the rock

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

Siderite

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