But the desire of businesses to sample Texas trail dust pre-dates Rick Perry.

WSJ: Henninger: The Perry Paradox

Three days later when the first men to reach another world arrived, their initial act, within moments of setting foot there, was to document and collect a precious sample of lunar dust, to share with laboratories across the Earth.

BBC: The magic of Apollo

Although this is a small sample, it suggests that man-made dust particles predominate over naturally occurring ones.

ECONOMIST: Orbital debris

" Red residue clinging to the scoop walls is from a sample collected earlier from a drift of windblown dust and sand called "Rocknest.

FORBES: First Curiosity Drilling Sample in the Scoop