Vermiculite is a lightweight aggregate. It is made by super heating volcanic rock which then causes it to expand or exfoliate. When vermiculite is mixed with concrete it creates a lightweight concrete. more »

For decades, a mine near Libby, Montana supplied 70 percent of vermiculite sold in the U.S. Later, that vermiculite was found to be contaminated with asbestos. . more »

Vermiculite is a naturally occurring volcanic mineral that expands with the use of heat. For 80 years, vermiculite has been mostly used for insulation, but it also is used in horticulture. Adding vermiculite to soil improves the airflow by preventing compaction. It resembles gold flakes. Vermiculite mines are found in the United States, China and South Africa. Adding coarse vermiculite to your gardening supplies can improve the overall growth of your plants. more »

Plants need rich, well-drained soil to thrive, and vermiculite can help boost their growing medium. Although vermiculite is often packaged with potting soil mixes, it is not a type of soil at all. Instead, vermiculite is a mineral that resembles mica. When treated with intense heat, vermiculite expands into lightweight particles containing many layers. The particles help lighten heavy soils and the layers hold moisture and nutrients, helping plants grow. more »

Vermiculite is a material used as loose fill insulation in attics. Prior to 1990, most vermiculite came from a mine in Montana. The mine contained asbestos, which contaminated the vermiculite. Inhaling asbestos fibers can cause lung disease or cancer. Current testing practices for asbestos contamination in vermiculite are not always accurate. Because of the danger associated with pesticide exposure and inaccuracy of testing, the United States Environmental Protection Agency (EPA) recommends that caution should be used around all vermiculite. more »

Vermiculite is a popular material used in attic insulation. It has a pebble-like appearance, is a pour-in material, and is light brown to gold in color. Vermiculite mining in America resulted in natural contact with asbestos, and removal of vermiculite insulation in the home or office is usually a result of asbestos contamination. Only damaged asbestos releases dust or fibers, and undamaged vermiculite is considered safe to leave in place, but it is a good idea to have it sealed. Hire a licensed professional to remove the vermiculite to avoid further air contamination. more »

Vermiculite is a mineral that has numerous commercial applications. One of its properties is its tendency to expand when exposed to rapid increases in heat. Expanded vermiculite has been used as a component of insulation, concrete, potting soil and brake pad liners. Vermiculite from one major source, however, has been associated with asbestos and in some cases may pose a significant health risk. more »

Vermiculite is a mineral that is can be mixed into soil to help keep soil loose and moist. Vermiculite can be used on potted plants or those in the ground. It increase the chances for a plant to grow to its fullest potential. It can be used especially for plants that require a lot of water. more »

There are people who find it satisfying to help plants grow--watching new shoots come up, seeing a transplanted tree bear fruit, or stopping to smell the roses. One of the best garden tips is to use vermiculite. This naturally-occurring substance is a good way to enrich topsoil, encourage growth and help new plants root. Work vermiculite into your garden scheduleso that all of your plants will be healthy, strong and thriving. more »