The rocks were placed or dropped onto the sand and looked very artificially placed.  Shaking the setting helped, but the overall look was contrived or artificial.

   Clearly, the material in the microscopic images was not simply dropped into the soil surface- it had to "weather" into it to produce the look it has.

   This indicates that the material in the real images was not simply mashed into the Martian soil.  Rather, it supports the idea that some other process placed it in its setting.

   Also, in both of these images, it is very clear that the sand, while close in color and grain size to the actual Martian soil, is not even close in its dynamics.  It shows absolutely no clumping or cohesion.  It is literally desiccated and has no inter-granule stickiness.  This would lead one to consider that Martian soil might in fact be damp.

   Once the mixture was shaken a few times to allow the rocks to rise to the surface, low volume air was blown over it to simulate the effects of wind.  This did improve the appearance greatly, although the soil still did not have to clumping or consistency of real Martian soil.

   This is a 30% scaled image of the original 1024 x 960 shot.

   We can now see many of the artifacts that show up in the original images when they are magnified.  One such artifact is the "linear" features that appear to be made of granules aligned in grooves or similar patterns.

   This makes a clear statement that we cannot rely on this low resolution data to tell the story as we might expect.  Some false conclusions can be drawn due to the image data suggesting structures that are not in fact present in the real world.