Galena

By Kylie

PbS

• Pb(Lead)-1• 86.60 %

• S (Sulfur)-1• 13.40 %

Formation

• Sometimes forms because the waters are suddenly cooled.

• There are several other physical or chemical processes that can also cause the formation of galena from hydrothermal fluids.

Found

• In the United States Galena is found in the Mississippi Valley.

• Missouri, Illinois, Iowa, and Wisconsin all have significant deposits.

• The Rocky Mountain States of Colorado, Utah, Idaho, and Montana also have significant deposits.

Uses

• Lead ore

• Mineral specimens and used as a shied against radiation

Interesting Facts

• Galena most often has a cubic crystal form. • It is a soft mineral about 2.5 on the Mohs

Scale. • The color ranges from silvery to dull gray with

a dull gray-black streak and a metallic luster.

Sources

• http://www.rocksandminerals4u.com/galena.html

• http://answers.yahoo.com/question/index?qid=20100126063601AAqHkDf

• http://webmineral.com/cgi-bin/search/search.pl?sitesearch=&Terms=galena