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Calcite With Galena & Goethite

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PCZ209441

Calcite With Galena & Goethite

Description Tabs

Description
Locality: 
Pike Law, Newbiggin, Teesdale, County Durham, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4 × 2.2 cm
Description

Galena crystals dotted with goethite pseudomorphs after siderite and over this are globular masses of white calcite rather like icing on a cake! The calcite shows dull red-orange fluorescence under long-wave U.V.

Mineral Data
What's on the rock

Calcite

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

Galena

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

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
Peter Crozier Minerals