Vermiculite Ore Containing

VERMICULITE IS NOT ASBESTOS

Vermiculite ores from some sources were even found to contain asbestos minerals but asbestos is not intrinsic to vermiculite and only a few ore bodies have been …

Asbestos Analysis of Vermiculite and Vermiculite ...

vermiculite attic insulation (VAI) which may contain asbestos. • People who have homes with vermiculite attic insulation should become informed, not alarmed,” said Stephen L. Johnson, EPA’s Assistant Administrator for the Office of Prevention, Pesticides, and Toxic Substances.

Asbestos in Vermiculite Insulation | Wisconsin Department ...

Some residential vermiculite insulation may contain asbestos. Below are answers to common questions about asbestos in insulation. Keep windows open for good ventilation and wipe up all dust and debris using wet cleaning methods (wet-wiping and wet-mopping). A HEPA vacuum can be used for cleanup of minor dust or debris.

How vermiculite is made - material, history, used ...

Raw Materials. One of the most common forms of vermiculite is generally known as commercial vermiculite. This is the form that is mined and processed for various end uses. It is derived from rocks containing large crystals of the minerals biotite and iron-bearing phlogopite.

Vermiculite - EMSL Analytical, Inc.

Vermiculite. All vermiculite ores contain a range of other minerals that were formed along with the vermiculite in the rock. Vermiculite ores from some sources have been found to contain asbestos minerals but asbestos is not intrinsic to vermiculite and only a few ore bodies have been found to contain more than tiny trace amounts.

Hazardous Substance Tools: What about vermiculite?

Vermiculite is a mineral ore that has been expanded to produce the familiar light granules that are sometimes used as loose fill insulation. Only a few vermiculite ores contain asbestos. However, between 1960 and 1990, 70 percent of the world’s vermiculite ore came from a mine in Libby, MT, and was marketed as Zonolite.

Vermiculite Insulation | Honest Home Inspections

A large portion of the insulation is derived from asbestos–containing vermiculite, a mineral ore resembling mica that was mined in the small town of Libby, Montana. The contaminated vermiculite was shipped throughout the nation. Although Libby’s asbestos–contaminated vermiculite mine shut down in 1990, its legacy of death and disease remains.

Vermiculite Insulation - TheHomeInspector - The ...

All vermiculite ores contain a range of other minerals that were formed along with the vermiculite in the rock. Vermiculite ores from some sources have been found to contain asbestos minerals but asbestos is not intrinsic to vermiculite and only a few ore bodies have been found to …

Exposure to Asbestos-Containing Vermiculite Ore and ...

Libby is a small community located in the Kootenai River Valley of northwestern Montana approximately 6 miles southwest of Zonolite Mountain, a mountain containing high concentrations of vermiculite ore. The ore was mined beginning in the 1920s by the Zonolite Company and then later by W.R. Grace, which bought the mine in 1963.

Vermiculite - Wikipedia

Commercial uses. Refractory/Insulation gunning and castable mixes: exfoliated vermiculite can be combined with high alumina (also known as calcium aluminate) cements and other aggregates such as expanded shale, clay, and slate to produce refractory/insulation concretes …

How vermiculite is made - material, history, used ...

Vermiculite ore deposits may also contain a variety of other materials such as mica, quartz, and feldspar. These deposits vary from one mining location to another. During the manufacturing process, some of these materials may pose potential health hazards to workers.

Difference Between Perlite & Vermiculite | Home Guides ...

Vermiculite comes from 19 varieties of micaceous minerals and the ores contain silica, alumina, iron oxides and magnesium oxide. The expanding properties upon heating were observed by Thomas Webb in 1824, who heated ore over a candle and watched it turn into elongate forms that resembled worms.

Hazardous Substance Tools: What about vermiculite?

Vermiculite is a mineral ore that has been expanded to produce the familiar light granules that are sometimes used as loose fill insulation. Only a few vermiculite ores contain asbestos. However, between 1960 and 1990, 70 percent of the world’s vermiculite ore came from a mine in Libby, MT, and was marketed as Zonolite.

Vermiculite Health, Safety and Environmental Aspects

Vermiculite and other ore bodies can contain a variety of associated minerals such as mica, quartz, feldspar, etc. The associated minerals are unique to a particular deposit and, in some cases, may include minerals which could pose a health risk if present in significant quantities.

US5079280A - Low temperature expandable vermiculite and ...

The expansion temperature of vermiculite ore may be lowered, and the tendency of the sheet containing the vermiculite to undergo negative expansion reduced, by treating the vermiculite ore with ammonium cations, as disclosed in U.S. Pat. No. 4,305,992, the disclosure …

Exposure to Asbestos-Containing Vermiculite Ore and ...

Libby is a small community located in the Kootenai River Valley of northwestern Montana approximately 6 miles southwest of Zonolite Mountain, a mountain containing high concentrations of vermiculite ore. The ore was mined beginning in the 1920s by the Zonolite Company and then later by W.R. Grace, which bought the mine in 1963.

Schundler Company Vermiculite Technical Information ...

THE SCHUNDLER COMPANY. As a result of these articles and news stories, however, many people have become confused and concerned about vermiculite in general. Vermiculite itself does not contain asbestos; it was just the Libby, Montana mine which was contaminated because of the presence in the mountain of a secondary mineral called diopside.

Products Containing Asbestos: Home Products, Appliances ...

Asbestos in Vermiculite Garden Products. Because it provides aeration and drainage, vermiculite has been used in fertilizers, pesticides, potting mixes, and composts. However, this …

STRATEGY FOR FURTHER ASSESSMENT OF VERMICULITE …

Strategy for Further Assessment of Vermiculite Ore Asbestos Sites September 30, 2008 I. Background : The Agency is committed to developing a strategy by the end of FY08 for conducting

Health Canada Vermiculite Insulation Containing Asbestos

vermiculite ore produced by the Libby Mine in Montana from the 1920's to 1990. It was sold as Zonolite® Attic Insulation and possibly other brands in Canada during that time. Vermiculite from the Libby Mine may contain asbestos. The Libby Mine supplied the majority …

Vermiculite is a porous mineral used as insulation, and to ...

Vermiculite is a mineral ore that is composed of hydrated laminar magnesium-aluminum-iron silicate (1). Vermiculite ores may also contain a range of other minerals including asbestos (1).

Asbestos in Vermiculite and Vermiculite Containing Products

Asbestos in Vermiculite – Health Effects Libby, Montana • Asbestosis - A serious, chronic, non-cancerous respiratory disease. It is a scarring of lung tissue caused by the presence of asbestos fibers. • Mesothelioma - Mesothelioma is a rare form of cancer which occurs in …

Vermiculite is a porous mineral used as insulation, and to ...

Oct 08, 2012 · Vermiculite is a mineral ore that is composed of hydrated laminar magnesium-aluminum-iron silicate (1). Vermiculite ores may also contain a range of other minerals including asbestos (1).

New Asbestos Testing Method For Vermiculite Accurate And ...

New Asbestos Testing Method For Vermiculite Accurate And Cost-Effective ... of Health recently updated its regulations for identifying and quantifying asbestos in sprayed-on fireproofing containing vermiculite (SOF-V). ... (circa 1920 through 1990) came from a mine in Libby, Mont., and this vermiculite ore was contaminated with low amounts of ...

Workers Exposed To Libby Vermiculite Ore ... - ScienceDaily

Vermiculite ore from Libby has been shown to contain high levels of asbestos, which could have become airborne and inhaled when used in manufacturing. Vermiculite is widely used in a variety of applications, including insulation, packing materials, construction materials and gardening products.

Difference Between Perlite & Vermiculite | Home Guides ...

It consists mostly of silica and has water molecules trapped within it. Vermiculite comes from 19 varieties of micaceous minerals and the ores contain silica, alumina, iron oxides and magnesium oxide.

Asbestos in Vermiculite and Vermiculite Containing Products

Asbestos in Vermiculite – Health Effects Libby, Montana • Asbestosis - A serious, chronic, non-cancerous respiratory disease. It is a scarring of lung tissue caused by the presence of asbestos fibers. • Mesothelioma - Mesothelioma is a rare form of cancer which occurs in …

(PDF) Exposure to Asbestos-Containing Vermiculite Ore and ...

Exposure to Asbestos-Containing Vermiculite Ore and Respiratory Symptoms among Individuals Who Were Children While the Mine Was Active in Libby, Montana.pdf Environmental Health …

Vermiculite - an overview | ScienceDirect Topics

Attic insulation produced using vermiculite ore, particularly ore that originated from the Libby mine, may contain asbestos fibers. Today, vermiculite is mined at three U.S. facilities and in other countries that have low levels of contamination in the finished material.

Exposure to Asbestos-Containing Vermiculite Ore and ...

Libby is a small community located in the Kootenai River Valley of northwestern Montana approximately 6 miles southwest of Zonolite Mountain, a mountain containing high concentrations of vermiculite ore. The ore was mined beginning in the 1920s by the Zonolite Company and then later by W.R. Grace, which bought the mine in 1963.

UC HealthNews : Plant Workers Exposed to Vermiculite Ore ...

Vermiculite ore from Libby has been shown to contain high levels of asbestos, which could have become airborne and inhaled when used in manufacturing. Vermiculite is widely used in a variety of applications, including insulation, packing materials, construction materials and gardening products.

Asbestos Used in Potting Mixtures - Discover Where ...

Asbestos in Potting Mixtures. For potting mixes that contain vermiculite, asbestos contamination is a major concern. Vermiculite is a naturally occurring mineral that expands up to 15 times its normal size when exposed to heat. Vermiculite is also very absorbent. It has a flaky appearance that is often compared to that of mica.

What is vermiculite insulation? my attic? Do I have ...

supply of vermiculite came from a mine near Libby, Montana. This mine had a natural deposit of asbestos which resulted in the vermiculite being contaminated with asbestos. Attic insulation produced using vermiculite ore, particularly ore that originated from the Libby mine, may contain asbestos fibers. Today, vermiculite is mined at

Study of Asbestos Contamination of Former Vermiculite ...

Libby ore was processed at vermiculite exfoliation plants across the country including one located in Spokane, Washington. EPA Region 10 conducted a three phase study at the Spokane vermiculite exfoliation plant to determine if asbestos fibers in the soil at …

Characterizing the source of potentially asbestos-bearing ...

The goal of this study was to determine if in situ near-infrared reflectance measurements could be used to reliably identify the source of vermiculite ore and therefore its potential to contain asbestos. Spectra of 52 expanded ore samples, including attic insulation, commercial packing materials, and horticultural products from Libby, Montana; Louisa, Virginia; Enoree, South Carolina; Palabora, South Africa; and Jiangsu, …

CBC News In Depth: Consumers: Vermiculite

W.R. Grace bought the vermiculite mine in Libby in 1963 from the Zonolite Company. More than 680 million kilograms of raw contaminated ore was sent to processing plants across Canada.

Vermiculite Containing Materials

9/11/2013 1 Vermiculite Containing Materials Analytical Challenges EMSL AnalyticalInc. Cinnaminson,NJ08077 CopyrightEMSL2013 1 EMSL AnalyticalInc. Cinnaminson,NJ08077 ...

Incidental Vermiculite Building Insulation Exposure Hazards

Most research on health hazards from asbestos-containing vermiculite insulation has focused on workers at vermiculite mining or processing sites or at communities close to those locations. ... Incidental Vermiculite Building Insulation Exposure Hazards ... The asbestos content of this product and the vermiculite ore have been measured as high ...