3. 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.
4. 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.
5. Uses
• Lead ore
• Mineral specimens and used as a shied against
radiation
6. 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.
