Vermiculite
    (Mg,K)x(Mg,Al,Fe)3(OH)2[(Si,Al)2O5]2.nH2O
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  1. This structure uses octahedra
    This structure uses tetrahedra

  2. Build a tetrahedral sheet
  3. Build a total of four tetrahedral sheets
  4. Build an octahedral sheet
  5. Build a total of two octahedral sheets
  6. Join a tetrahedral and an octahedral sheet
  7. Join another tetrahedral sheet to form one layer
  8. Build a total of two layers
  9. Add magnesium ions between layers
  10. Add empty octahedra as spacers
  11. All layers

  12. Display options
    Polyhedra: Translucent Solid Quadrant Off
    Atoms: Ball&Stick Ball Stick
                Spacefill Translucent Off
    Always spacefill other ions
    Labels: Small Medium Large Off
    Stereo: Wall Red Blue 90° Off
    Spin   Perspective   Antialias

    Note: Substitution of Mg+2 for Al+3 or Fe+3 requires interlayer Mg+2 for charge balance.

Developed in collaboration with the
University of Wisconsin Materials Research Science and Engineering Center
Interdisciplinary Education Group   |   MRSEC on Nanostructured Interfaces
This page created by George Lisensky, Beloit College.  Last modified May 27, 2009 .
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