Facts About Perlite

Consisting of a variety of elements, perlite is volcanic rock that is used in a diversity of industries. It is similar to, but distinct from, obsidian.

History

After having several common names, in 1822 perlite became the mineral's common name. In the late 1920s and throughout the 1930s, perlite was studied for practical uses. In 1938, a patent was applied for the use of perlite as a refractory (a substance that is stable at high temperatures) and as an insulator. World War II temporarily stunted the perlite industry.

Classification

Perlite is an igneous rock, a volcanic glass. It is porous and has a high water content.

Uses

Perlite's uses include water filtration, an anti-caking agent, food and drink clarification, construction material and agriculture products.

Sources and Production

Perlite has been found across the world. In 2005, the highest commercial producer of perlite was Greece.

Considerations

When heated, perlite expands due to water vaporization. Perlite that has been expanded is a commodity.

References

• Free Dictionary Perlite
• Perlite
• Health Effects of Perlite