2.3" Galena, Chalcopyrite and Sphalerite Association - Peru

This beautiful specimen contains an association of galena, chalcopyrite and sphalerite crystals. It comes from the Huanzala Mine in Peru and the entire piece measures 2.3" wide.

Galena is a lead based mineral that is in fact the primary ore of lead, and has been used for its lead content for thousands of years. Galena typically displays a gray metallic luster and forms cubes or octahedral crystals. The chemical composition of galena is PbS.

Chalcopyrite is a brass-yellow colored mineral which is one of the most important ores of copper. When weathered chalcopyrite loses it's metallic luster, turning a gray-green color. When acids are present the tarnish can develop a red to blue to purple iridescence.

Sphalerite is a part of the sulfides group and typically exhibits a grey/black appearance due to high concentrations of impurities. When sphalerite is in it's purest state, the chemical composition is ZnS, and can display a gemmy transparent light tan/yellow color. This is one of the few minerals that can form crystals ranging anywhere between gemmy and transparent to opaque and metallic-like. Opaque or cloudy sphalerite tends to be most abundant, due to the ease of iron replacing zinc in the process of formation.

FOR SALE
DETAILS
SPECIES
Galena, Chalcopyrite and Sphalerite
LOCATION
Huanzala Mine, Bolognesi, Peru
SIZE
2.3" wide
CATEGORY
ITEM
#173343