Mineral Species: Galena and Silver

Chemical Formula: PbS

Chemical Name: Lead Sulphide

Mineral Class: Sulphide

Mineral Notes: Galena is one of the most abundant and widely distributed sulfides. It is the main ore of lead and frequently contains valuable amounts of Silver and occasionally Zinc.

Description: A rather unusual crystal of Galena showing several growth zones and feather-like surface stiations. The mineral has a strong metallic luster and a nice colour contrast is provided by white Quartz adhering to one side of the specimen.

Location: Gill Mine, Galena, Galena District, Jo Daviess Co., Illinois, USA.