Galena
 >View Object
Fact sheet
Description: 

Galena (lead sulphide) is the principal ore of the heavy metal lead. This specimen shows intergrown cube-shaped crystals of dull grey galena and comes from West Chiverton Mine near Perranzabuloe.

In Cornwall galena occurs in veins with sphalerite (zinc sulphide) and other sulphide minerals. Five mines dominated lead production in Cornwall during the mid to late 19th century, but the most productive was West Chiverton.

Cornish galena frequently contained a certain amount of silver. Typically the lead ores from West Chiverton yielded 75% lead metal and around 0.09% silver. The very high value of silver compared with that of lead, meant that its sale made a disproportionately large contribution to the overall profitability of the mine.

Chemical Formula: PbS

Specimen no. TRURI 1906.43.2b
Location: West Chiverton
Grid Reference: SW 793 508

Mindat http://www.mindat.org/min-1641.html

In Place
In Time
Accuracy:
Location precision: 
Good
Timescale:
Not known
Ma = Millions of years ago
In Focus
Theme:

Theme:

What\
Type:
Type: 
mineral
What\
Category:

Category:

What\