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Galena & Sphalerite On Quartz

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LCM45825

Galena & Sphalerite On Quartz

Description Tabs

Description
Locality: 
Brownley Hill Mine, Nenthead, Cumbria, United Kingdom
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 6 × 2 cm
Largest Crystal: 
1.00cm
Description

Two prominent galena crystals sitting to one side of smaller deposits of galena and shiny balck sphalerite sitting on a thin crust of quartz.

Mineral Data
What's on the rock

Galena

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

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
Lakeland Crystals and Minerals