An atomic resolution image of Calcite, this time taken on he Dimension Icon (90um scanner, large sample platform, SNL+ probe) showing the height and stiffness channels. (In the software, this is called Modulus, however, at the atom level, modulus is not defined since it is a continuum property. Here we simply note that areas where the force curve slope is steeper are appear brighter in the image and are qualitatively stiffer than other areas.)
In the image you can see striking structure including the very interesting detail that the alternate rows of atoms have significantly increased stiffness.