jMol series mica

Mica is "the rock that comes in multipage books". What are the dimensions of this tiny three-page stack of muscovite? How large is the step from one mica layer to the next? What are the dimensions and angles associated with the muscovite unit cell (drawn in blue)? What kind of atoms make up the "icing" between the layers? One cool use of mica is to offer a clean flat surface for scientific experimentation by cleaving top layers away (e.g. with help from a piece of scotch tape).

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Here's an atomic force microscope image of etched mica showing the layered terrace structure. Each of the three levels is one "mica page" in thickness.

Here is a low-mag image of an etched alpha-recoil track: the damage-trail caused by the recoil of a uranium atom in mica, just as that uranium atom spit out a helium nucleus during "alpha decay". The slightly darker and brighter patches in the flat areas away from the pit are "page thick" terraces like those shown above, and the white dots are likely particles of some sort on the mica surface.
Here's a closeup of the above etched-track pit that highlights the single-page steps down into its interior.
Here is a topography image, colored by a lateral force signal, of some nanometer-thick slippery patches (white) on a mica. The shallow steps in the foreground are single-page steps into another alpha recoil track pit. Even stranger: The shadow in the foreground may be from the nanohuman photographer who took the picture...