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Image #   23407E
Name:   Expanded vermiculite pellet
Copyright:   Copyright 2009 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Expanded vermiculite pellet. Vermiculite is a natural mineral that expands with the application of heat. Vermiculite (also known as Mica or Micafill) is used for insulating, soil conditioning and packing materials. It consists of expanded mica that has a highly laminated structure. Mica is a mineral composed of aluminum silicate along with sodium, magnesium and potassium silicates. Its salient characteristic is its perfect basal cleavage, which means that it can be separated into very thin laminae (layers). It is non-flammable, and because the expansion process introduces air between the layers it is lightweight, and a good insulator. Vermiculite is mined in the United States and South Africa.
Magnification*: x120
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   23407E miscellaneous mica vermiculite mineral packing material SEM micafall insulation insulation material insulation materials minerals packaging packaging material packaging materials aluminium silicate magnesium sodium basal cleavage non-flammable material non-flammable materials nonflammable material nonflammable materials potassium silicate potassium silicates insulator basalt mineral basalt minerals basaltic mineral basaltic minerals soil conditioner mica pellet mica pellets soil conditioning packing materials exfoliated vermiculite exfoliation 06.01.09 zonolite high temperature insulation high temperature insulations high-temperature insulation high-temperature insulations refractory insulation refractory insulations sheet silicate sheet silicate mineral sheet silicate minerals sheet silicates

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