Vermiculite is a mica-like mineral with the unique property of exfoliating to a low-density bulky material when heated. Vermiculite concrete is used for roof decks and floor fill where lightweight, thermal insulation, and acoustical properties are of particular importance. Vermiculite plasters and cement are employed mainly for fireproofing purposes. They are also valuable by reason of light-weight, good resilience, and good bonding properties. Loosefill vermiculite is used to insulate walls and ceilings. The use of vermiculite as a thermal insulator has gained increasing importance in light of the current desire to save energy through higher levels of home insulation. The material also has utility in agriculture, primarily due to its high absorptive capacity. This Bureau of Mines report presents comprehensive data on vermiculite including industry structure, uses, reserves-resources, technology supply demand relationships, economic factors and problems, operating factors and problems, and outlook to the year 2000.
Bureau of MinesC Street Between 18th and 19th Streets, NW
Washington, DC United States 20241
- Haines, S K
- Publication Date: 1978-8
- Features: Figures;
- Pagination: 10 p.
- TRT Terms: Forecasting; Freight traffic; Mineral resources; Traffic forecasting
- Subject Areas: Freight Transportation; Planning and Forecasting; Railroads;
- Accession Number: 00183912
- Record Type: Publication
- Source Agency: Bureau of Mines
- Report/Paper Numbers: BUMINES-MCP-19
- Files: TRIS
- Created Date: Dec 3 1978 12:00AM