Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Grace. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. A member of the phyllosilicate group of minerals, it resembles mica in appearance. Grace. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. R. Grace. Grace. Complete a blank sample Vermiculite in Homes. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Many types of asbestos insulation, including loose-fill, pipe wrap and spray-on, were friable and easily released asbestos fibers. In cases of long-term exposure to extremely high levels of dust, complicated pneumoconiosis with lung function may occur. 1 of 17 An attic shown with vermiculite insulation poured in between the joists. Grace. Grace. Grace. R. Grace. R. If patients don’t develop mesothelioma, they can expect some type of respiratory issue. Grace. Grace. The expanded vermiculite is a light-weight, fire-resistant, and odorless material and has been used in numerous products, including insulation for. 1 in 4 Americans Don't Know if Their Homes Contain Asbestos. C. Hazardous Products. Grace. Grace. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. There were two general objectives for the pilot study: (1) obtain a rough estimate of amount of asbestos in attics having vermiculite attic. That’s good news, because most Zonolite, a type of vermiculite insulation, falls into that category. R. Grace. While not all vermiculite produced before 1990 contains asbestos fibres, it is reasonable to. Tested for vermiculite to see if it was from Zonolite. 1); this study revealed a striking association of asbestosis mortality with levels of cumulative exposure and duration of exposure. Montana Gov. These products commonly contained 15% asbestos to 100% asbestos. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. A range of. Grace & Company (WRG). Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. A range of tasks selected. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Grace. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. It is best to assume that the material may contain asbestos. R. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Sullivan [ 9] reported 22 deaths from asbestosis (expected = 0. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Grace. Another study found that, among houses with vermiculite attic insulation, only 26% had detectable levels of amphibole asbestos in their living spaces. Grace. For years, Zonolite was used in the insulation of homes throughout the United. In order to be eligible for reimbursement a claimant must be able to show: That vermiculite is the Zonolite Brand. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. In order to be eligible for reimbursement a claimant must be able to show: That vermiculite is the Zonolite Brand. Grace. Grace. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. It was also used around town on gravel roads. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Grace case for a Partial Summary Judgement finding Zonolite Attic Insulation (ZAI) does not pose an unreasonable risk of harm. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. as evidence of PID. The EPA and ATSDR strongly recommend: Vermiculite insulation should be left undisturbed in your attic. Asbestos ore is made up of long, thin fibers that can only be seen through a microscope. R. Fully equipped to handle any sized project, and serving all of Michigan including Wyandotte, Detroit & surrounding areas. Grace. Zonolite is a trademarked brand name of a vermiculite attic insulation that was sold between the 1940s and 1990s. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. R. R. Weatherizing the house as normal after testing reveals that the vermiculite insulation contains less than 1% asbestos. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Zonolite is the trademarked name of a vermiculite attic insulation product sold between the 1940s and 1990s. Ex-Worker Wins $36. 1179/107735210799160219. R. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Zonilite Attic Insulation (ZAI) is an exfoliated vermiculite material that originated from the previously described asbestos-contaminated mining site in Libby, MT. By 1977 such loose-fill insulation, or Zonolite Attic Insulation (ZAI), consti-tuted 15 % of domestic vermiculite use. Grace. A range of tasks selected for evaluation included cleaning, working around, moving, and removal of ZAI in attics and living spaces. We searched for articles on non-occupational or. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. According to a 2022 report by the European Commission, over 70,000 workers died in 2019 from past exposure to asbestos. Article CAS Google Scholar. In order to be eligible for reimbursement a claimant must be able to show: That vermiculite is the Zonolite Brand. A range of tasks selected for evaluation included. Zonolite is contaminated with tremolite, a highly toxic type of asbestos. [Congressional Record Volume 149, Number 22 (Thursday, February 6, 2003)] [Senate] [Pages S2037-S2044] From the Congressional Record Online through the Government Publishing Office [studies were designed and conducted to evaluate amphibole asbestos exposures in homes containing Zonolite (expanded vermiculite) attic insulation (ZAI). Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. It has been a relatively prosperous town among the depressed mining towns of western Montana. Expert Help. . Grace. Grace. 975. Grace. A range of tasks selected for evaluation included cleaning, working around, moving, and removal of ZAI in attics and living spaces. The present case study reports on tissue burden of fibrous dust in a person who used a vermiculite material (Zonolite) as an attic insulator some 50 years prior to her death. Ironically, in both studies, some of. R. The Dearborn plant processed more than 200,000 tons of Libby vermiculite from 1966 to 1988; records are unavailable for the time periodBasically, vermiculite is a rock type substance that was utilized in the 70’s as an insulating agent. R. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. R. Grace. Log in Join. A 2017 study in the American Journal of. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. [Congressional Record Volume 149, Number 22 (Thursday, February 6, 2003)] [Senate] [Pages S2037-S2044] From the Congressional Record Online through the Government Publishing Office [Several studies were designed and conducted to evaluate amphibole asbestos exposures in homes containing Zonolite (expanded vermiculite) attic insulation (ZAI). Vermiculite was a common type of attic insulation that was sold from the late 1920s up until the EPA shut down the Zonolite vermiculite mine in Libby Montana in 1990. R. R. 2010. Grace. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. R. Sold under various brand names, such as Zonolite Attic Insulation, the insulation came in big bags. 844. R. 3. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. 2255 [email protected]. Grace. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. We searched for articles on non-occupational or. The results suggest that asbestos sources in homes can contribute to living space contamination and develop and test procedures that would allow for the safe and effective weatherization of low-income homes with asbestos. The contaminated vermiculite went to processing plants throughout the country. Grace. Many of the asbestos-containing products produced by W. Over 70% of vermiculite ore mined in the world came from Libby. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. R. Abstract. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. The Government of Canada is informing Canadians about the potential risks to health posed by vermiculite insulation containing asbestos. Vermiculite produced by the Libby Mine in Montana from the 1920s-1990 and sold as Zonolite® Attic Insulation may contain amphibole asbestos, and potential exposures may occur in homes where Zonolite® insulation is disturbed. 3 During each year of the 1970s alone approximately 53,000 tons of vermiculite were installed into US homes, according to James R. Of concern is Zonolite® Attic Insulation; this insulation was sold in Canada under the name of Zonolite® and was extracted from the Libby Mine in Montana, USA. If you spent $3,000 for abatement and re-insulation, you are potentially eligible for. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. In order to be eligible for reimbursement a claimant must be able to show: That vermiculite is the Zonolite Brand. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. The Zonolite Attic Insulation Trust (ZAI Trust) was created to help educate the public about the possible health effects of asbestos-containing vermiculite and to provide partial reimbursement for ZAI removal to qualified claimants. In 2023, Grace agreed to an to restore damaged lands in and around the Superfund site. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. S. Several avenues for environmental asbestos exposures have been described and may be associated with asbestos related disease, including mesothelioma. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. One such trust is the Zonolite Attic Insulation Trust, which reimburses homeowners for a portion of the abatement of vermiculite insulation manufactured by W. R. Grace. Grace. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Zonolite Attic Insulation; Zonolite Econowhite; Zonolite Insulating Cement; Zonolite MK-1 and MK-2 Insulation; Zonolite Spraytex; Zonolite Super 40 Spray Surfacer;. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Asbestos property damage claims other than for Zonolite Attic Insulation: Richard B. Another study found that, among houses with vermiculite attic insulation, only 26% had detectable levels of amphibole asbestos in their living spaces. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. In order to be eligible for reimbursement a claimant must be able to show: That vermiculite is the Zonolite Brand. Grace. A range of tasks selected for evaluation included clean- ing, working around, moving, and removal of ZAI in attics and living spaces. The vermiculite insulation taken from this mine was contaminated. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. W. However, if the vermiculite insulation contained asbestos fibres, these asbestos fibres are related to health issues if inhaled. R. Show More Show Less 2 of 17 Vermiculite is a mineral that was commonly used as insulation in homes built before. The fieldwork for these studies was. Grace. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Zonolite attic insulation exposure studies. The former Zonolite facility in Easthampton, Massachusetts, was an exfoliation plant operated by W. Grace. No software installation. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Zonolite attic insulation exposure studies. R. More than 2,400 people in Libby — about half the city’s population — have fallen ill as a result of exposure to asbestos. Several studies were designed and conducted to evaluate amphibole asbestos exposures in homes containing Zonolite (expanded vermiculite) attic insulation (ZAI). ATTIC INSULATION CONCERNS: GOOD NEWS AND MISLEADING WARNINGS: On May 21, 2003, the Environmental Protection Agency issued its report: "A Pilot Study to Estimate Asbestos Exposure form Vermiculite Attic Insulation" (66 pages). 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. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Grace. 3. 13 deaths) among 1672 Libby vermiculite workers during 1960–2001, for a SMR of 165. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Effects of Chronic Exposure Prolonged inhalation of excessive levels vermiculite dust may cause a simple pneumoconiotic condition, not normally associated with a decrement in lung function. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. A range of tasks selected for evaluation included cleaning, working around, moving, and removal of ZAI in attics and living spaces. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Asbestos Exposure. It is a pebble-like, pour-in product that is usually light brown or gold in color, ranging in size from very fine particles to course pieces around an inch long. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Grace. A range of. , used much of the vermiculite from Libby mines in the products that it sold from 1963 to 1984 when its sale was discontinued. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. The Zonolite Attic Insulation trust was established in 2014 to help homeowners with the cost of. R. Grace. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Grace. Hays, Richard Hatfield, William E. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Asbestos is a carcinogen associated with lung cancer, but few studies have examined the increased risk of lung cancer due to environmental asbestos exposure. R. It's typically caused by very high exposure levels over a long period of time, as seen in work-related asbestos exposure. The approximate remaining 25% is not eligible for reimbursement. R. Vermiculite is a naturally occurring mineral compound that expands when heated. Grace. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Additionally, ZAI Claimants offered two case reports of individuals (Harashe and. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. R. Grace has offered $18. Grace’s Zonolite attic insulation. Removing vermiculite from home or business attics normally costs between $10,000 and $15,000. R. The Zonolite Attic Insulation Trust (ZAI Trust) was created to help educate the public about the possible health effects of asbestos-containing vermiculite and to provide partial reimbursement for ZAI removal to qualified claimants. R. Grace. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Grace. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Grace. 78. S. Cumulative ambient asbestos. Some vermiculite produced at Libby Mine in Montana from the 1920s until 1990, sold primarily under the brand name Zonolite®, has been found to contain asbestos. The Environmental Protection Agency also includes information on its webpage about how to protect your family from asbestos-contaminated vermiculite insulation. as evidence of PID. Several studies were designed and conducted to evaluate amphibole asbestos exposures in homes containing Zonolite (expanded vermiculite) attic insulation (ZAI). Grace Corporation between 1923 and 1990. So, if you have vermiculite insulation, look into this. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Grace. The primary goal of the research described hereZonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. It has a granular, shiny appearance similar to quartz flakes or mica. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. At the height of asbestos insulation use, there were many different brands, including Zonolite, Kaylo and Limpet. Consisting of the naturally occurring mineral vermiculite, Zonolite was used for decades to insulate millions of American homes. R. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. In May 2003, EPA released information indicating that vermiculite contaminated with traces, less than 1% asbestos, is of significant concern. Zonolite Super 40: Type of spray insulation used for interior surfacing, commonly used as attic insulation. W. R. R. Int J Occup Environ Health 2010; 16:279-90. com. Environmental Protection Agency Ariel Rios Building 1200 Pennsylvania Avenue, N. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Much of the Libby vermiculite was used as attic insulation. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Grace. com. R. Zonolite insulation is no longer manufactured in the United States. Thousands of homeowners simply opened the bags and poured the vermiculite into their attic floor, as well as down exterior walls. The Minnesota Department of Health Institutional Review Board approved the study. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. CSE MISC. Washington, DC: US Environmental Protection Agency; 2003. Grace. This project began in November 2000 as a preliminary or pilot study of the analysis of vermiculite attic insulation. From a distance, vermiculite insulation resembles pebbles or gravel, and it fades to a grey color over time. R. Grace. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. S. Zonolite is the trademarked name of a naturally-occurring mineral vermiculite product mined in Libby, Montana, and was sold as attic insulation from the 1940s through the 1980s. Grace. W. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Smoking increases the risk of developing asbestosis. R. Grace. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Amphibole asbestos was present in all the insulation samples. In order to be eligible for reimbursement a claimant must be able to show: That vermiculite is the Zonolite Brand. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Many trusts today are specific to asbestos exposure. Zonolite® and was extracted from the Libby Mine in Montana, USA. WAP (e. R. R. W. 8 (95% CI 103. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Grace. e. R. It may have shiny flakes or small accordion-like pieces. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. At the same time, EPA issued a brochure entitled: "Current Best Practices for Vermiculite Attic Insulation" (2 pages). Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Schiro, Trustee Law Offices of Richard B. Grace. R. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Vermiculite insulation exposure levels in residential buildings: What are reasonable risk assessments for people exposed to vermiculite insulation in residential buildings. Get Started. R. R. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Recent findings about vermiculite ore contaminated with tremolite asbestos have caused. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. R. Millette International Journal of Occupational and. 10. The Environmental Protection Agency (EPA) estimated in 1985 that 940,000 American homes contained, or had contained, Zonolite attic insulation. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. ObjectiveThis report. The Zonolite Attic Insulation Trust (ZAI Trust) was created to help educate the public about the possible health effects of asbestos-containing vermiculite and to provide partial reimbursement for ZAI removal to qualified claimants. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. During the 1920s and 1930s, when asbestos knowledge was practically non-existent, the Libby Mine in Montana, Canada, produced Zonolite® Attic Insulation – and possibly other brands which may have contained amphibole asbestos – to supply. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Scientific studies have documented an increased risk of asbestos-related illness in HVAC mechanics and examined the risk of asbestos exposure when working on HVAC equipment. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. R. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. Abstract. R. Vermiculite Attic Insulation (Zonolite). homes and buildings may still contain Zonolite. , state funds, utility funds, the Zonolite Attic Insulation Trust Fund, and possibly homeowner contributions) because abatement is not allowed using WAP funds per Weatherization Program Notice (WPN) 17-7. 160+ million publication pages. Ewing WM, Hays SM, Hatfield R, Longo WE, Millette JR . S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Europe PMC is an archive of life sciences journal literature. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Abstract. Int J Occup Environ Health 2010; 16:279-90. Grace. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. Several studies were designed and conducted to evaluate amphibole asbestos exposures in homes containing Zonolite (expanded vermiculite) attic insulation (ZAI). S market, is well known to contain small quantities of hazardous amphibole (a mineral source. 25+ million members. Grace. Grace. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. A range of tasks selected for evaluation included clean- ing, working around, moving, and removal of ZAI in attics and living spaces. The trust will reimburse homeowners for 55% of their removal and re-insulation costs, with a maximum payout per owner of $4,125. Original Zonolite Branded Bag Photos or Original Zonolite Bag (See Part III of. Although some vermiculite, notably that mined in China and South Africa, is considered to be asbestos free, Zonolite, with approximately 75% of the U. A member of the phyllosilicate group of minerals, it resembles mica in appearance. Grace Company, contains asbestos. S market, is well known to contain small quantities of hazardous amphibole (a mineral source. Zonolite is the brand name of Libby Vermiculite sold by the Zonolite Company and later by W. R. Grace. S market, is well known to contain small quantities of hazardous amphibole (a mineral source.