A Message About COVID-19 Check Out TVA's Blog Vermiculite in the Industrial Sector Vermiculite Data Peat-Lite Crystal Structure of Magnesium Vermiculite Health, Safety and Environmental Aspects Horticultural Vermiculite Vermiculite in the Construction Market

Material Safety Data Sheet

Chemical Name: Vermiculite is hydrated magnesium-aluminum-iron silicate mineral. An independent testing laboratory conducts crystalline silica (quartz) analyses and the data are available on request.

Home Dupre Minerals, Vermiculite Boards, heat/fire resistent

Micalite Vermiculite Boards Material Safety Data Sheet (817 KB) DM210 Board Adhesive Safety Data Sheet (817 KB) Download PDF file Micalite Fitting Instructions (95 KB)


MATERIAL SAFETY DATA SHEET Product Name Specialty Vermiculite (including the following Specialty products Verxite®, Pool Cushion, Plaster Aggregate, Friction Vermiculite, Terralite, FPSV ) MSDS ID Number: Z-01763 MSDS Date: 03/01/2012 Page 1 of 4

Home · Dicalite Management Group

According to the 2017 USGS Mineral Commodity Summary, there are only two companies mining and operating Vermiculite domestically. Specialty Vermiculite Corporation (SPV) is one of those companies. SPV produces vermiculite concentrate in Enoree, South Carolina.


Vermiculite Insulation Asbestos. Vermiculite is a naturally occurring mineral compound that expands when heated. A member of the phyllosilicate group of minerals, it resembles mica in appearance. In its pure form, vermiculite is clean, odorless, nontoxic and sterile.

Vermiculite | mineral | Britannica

Vermiculite, clay mineral similar to montmorillonite in structure and, in some cases, composition. Vermiculite is typically formed by the alteration of biotite, and it occurs both as large pseudomorphs replacing biotite and as small particles in soils and ancient sediments. It is also formed at

Perlite | Minerals Education Coalition

Perlite. Perlite is an amorphous volcanic glass (SiO 2) that has relatively high water content, typically formed by the hydration of obsidian. Perlite has the unusual characteristic of expanding and becoming porous when it is heated. It can expand to as much as twenty times its original volume.

Vermiculite Mineral Data

Vermiculite Crystallography: Axial Ratios: a:b:c =0.5698:1:1.6218 : Cell Dimensions: a = 5.26, b = 9.23, c = 14.97, Z = 2; beta = 96.82° V = 721.65 Den(Calc)= 2.32

Clay mineral

Clay mineral - Clay mineral - Vermiculite: The vermiculite unit structure consists of sheets of trioctahedral mica or talc separated by layers of water molecules; these layers occupy a space about two water molecules thick (approximately 4.8 Å). Substitutions of aluminum cations (Al3+) for silicon cations (Si4+) constitute the chief imbalance, but the net charge deficiency may be partially ...


Vermiculite.co.in - Exfoliated vermiculite suppliers in India, we provide vermiculite mines for abrasives, fire-proofing,brake linings & horticulture. ... Optical Data of Vermiculite. ... Chart shows birefringence interference colour range (at 30 m thickness) and does not take into account mineral …


REFERENCES for Vermiculite; American Mineralogist Crystal Structure Database Record: [view record] Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America.

Vermiculite Mineral Data

Vermiculite NIOSH CDC. Vermiculite is a mineral that rapidly expands when heated Expanded vermiculite is used in construction and consumer materials Vermiculite mined near Libby Montana which accounted for more than half the worldwide production of vermiculite from 1925 to 1990 was contaminated with asbestos and asbestoslike fibers

Dangers of Asbestos Contaminated Vermiculite Insulation in ...

Vermiculite is a natural flaky mineral (similar to mica) that expands like popcorn when heated. Vermiculite is used in insulation, fire retardants, cement aggregate, fertilizer, and potting soil. The most popular vermiculite insulation in the U.S. was sold under the brand name Zonolite by W.R. Grace & Co.


A.L. Bush, in Encyclopedia of Materials: Science and Technology, 2001. 2.2 Vermiculite. Vermiculite is a mica, a hydrated, magnesium–iron–aluminum trioctahedral sheet silicate of varied composition. Its basic unit is two tetrahedral silicate sheets interlayered by an octahedral sheet that contains aluminum and iron (Grim 1962).Each tripartite layer, on its upper and lower surfaces, has ...

Western Mineral Products: Vermiculite Processing ...

Western Mineral Products Vermiculite Processing Operations in Northeast Minneapolis. Vermiculite ore containing hazardous Libby asbestos was processed in Northeast Minneapolis from 1938-1989. This page contains information about the vermiculite, ways people were exposed, potential health impacts, and publications and resources.

Mineral Resource of the Month: Vermiculite | EARTH Magazine

Vermiculite deposits are associated with volcanic ultramafic rocks rich in magnesium silicate minerals, and flakes of the mineral range in color from black to shades of brown and yellow. The crystal structure of vermiculite contains water molecules, a property that is critical to its processing for common uses.

Vermiculite: Mineral information, data and localities.

Forms as an alteration product of biotite or phlogopite, by weathering or hydrothermal action.Vermiculite is mined as a natural insulation material. The best exfoliation properties were observed not for pure vermiculite, but for intergrowths of vermiculite and other layer silicates (e.g. hydrobiotite). Naturally expanded vermiculite can occur in volcanic rocks.


Dupré Minerals Ltd. Spencroft Road, Newcastle-under-Lyme, Staffordshire, England.ST5 9JE Telephone: +44 (0) 1782 383000 Fax: +44 (0) 1782 383101 E-mail: [email protected] E FIRE RESISTANT BOARD Description This product is a non-combustible, fire resistant vermiculite

Vermiculite Statistics and Information

Flakes of raw vermiculite concentrate are micaceous in appearance and contain interlayer water in their structure. When the flakes are heated rapidly at a temperature above 870° C, the water flashes into steam, and the flakes expand into accordion-like particles. This process is called exfoliation, or expansion, and the resulting lightweight material is chemically inert, fire

Vermiculite Data Sheet

VERMICULITE (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: Two companies with mining and processing facilities in South Carolina and ia produced approximately 200,000 tons of vermiculite concentrate, but actual data have been rounded to one significant digit to avoid disclosing company proprietary data.

Vermiculite Mineral Data

Vermiculite Crystallography: Axial Ratios: a:b:c =0.5698:1:1.6218 : Cell Dimensions: a = 5.26, b = 9.23, c = 14.97, Z = 2; beta = 96.82° V = 721.65 Den(Calc)= 2.32

Mineralienatlas Lexikon

Mineral Data, Mineralienatlas Lexikon, Vermiculite. Handbook of Mineralogy (Anthony et al.), 2 (1995), 846. American Journal of Science and Arts 7 (1824), 55


Vermiculite is the mineralogical name given to hydrated laminar mangesium-aluminum-iron silicates which resemble mica in appearance. When subjected to heat, crude vermiculite has the unusual property of exfoliating or expanded into worm-like particles Vermiculite is considered a nuisance dust (also called "Particulates Not Otherwise ...


Vermiculite (Verm) is a generally trioctahedral 2:1 clay mineral with hydrated cations occupying the interlayer space. However, the negative layer charge of Verm, arising mostly from substitution of Al 3 + for Si 4 + in tetrahedral sites, is larger than that of smectite (Brigatti et al., 2013). Haley et al. (1982) observed two sharp Raman bands at 3739 cm − 1 and 3240 cm − 1 and two broad ...

Vermiculite | NIOSH | CDC

Vermiculite is a mineral that rapidly expands when heated. Expanded vermiculite is used in construction and consumer materials. Vermiculite mined near Libby, Montana, which accounted for more than half the worldwide production of vermiculite from 1925 to 1990, was contaminated with asbestos and asbestos-like fibers.

Vermiculite vs. Perlite: Similarities, Differences, and ...

Vermiculite retains moisture while perlite does not. So, by using a 50-50 ratio mixture, it creates an ebb and flow type of system. A 50-50 mixture will hold some, but not all, of the water. It will retain some of the nutrients, supplying the roots with the food necessary to grow as well as plenty of oxygen.

VERMICULITE Indian Minerals Yearbook 2013

vermiculite and binding agents, such as gypsum and plaster, have been important products and are applied to structural steel members in commercial buildings. The mineral is used in various types of building boards. Fine-sized, untreated vermiculite concentrates are included in the preparation of fireproof plaster boards. The exfoliated product ...