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Mineral resource of the month: vermiculite

January 1, 2008

Vermiculite, a hydrated magnesium-aluminum-iron silicate mineral, has a range of uses that take advantage of its fire resistance, good insulating properties, high liquid absorption capacity, inertness and low density. Most applications for vermiculite use an exfoliated (heat-expanded) form of the mineral. In general, coarser grades of vermiculite are used as loose fill insulation and in horticulture. Finer grades are used in wallboard and plasters and for animal feeds and fertilizers.

Publication Year 2008
Title Mineral resource of the month: vermiculite
Authors M.J. Potter
Publication Type Article
Publication Subtype Journal Article
Series Title Geotimes
Index ID 70031819
Record Source USGS Publications Warehouse
USGS Organization National Minerals Information Center