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Sphalerite Quartz Galena & Dolomite

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PCZ541388

Sphalerite Quartz Galena & Dolomite

Description Tabs

Description
Locality: 
Smallcleugh Mine, Nenthead, Cumbria, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5 × 5.5 cm
Description

A nice little specimen with reflective sphalerite crystals, modified galena cubes partially covered with micro-quartz crystals all resting on a mound of dolomite crystals. From a famous British locality.

Mineral Data
What's on the rock

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Galena

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

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White
Peter Crozier Minerals