Huh? What "structures?" What "Phenomenon?"
Are you talking about these samples of paint/rust? Please clarify.
By 'structures', I meant as an example the compenents of the red/grey particals and the highly energetic materail which releases it's energy readily.
By 'phenomenon', I meant that such structures are commonly formed by standard building materials.
The link I provided does answer the question of the composition of these fragments of paint attached to a layer of rust. RE "releases energy readily," yea, paint burns. Not at all like thermite.