Green Stain

• by MarceloVS

  Has a green stain under the big black stain but I don´t know what is it, I know the black stain is normal but and the green stain?

  Posted March 16, 2014 10:24 PM

• by mschwamb scientist, translator

  It could be carbon dioxide #frost or the fan/blotch particles sinking into the ice and the ice melting and refreezing with a slightly different crystal structure that produces the color. A more details explanation can be found here.

  Cheers,

  ~Meg

  Posted March 17, 2014 2:04 AM

• by MarceloVS

  Thank you so much!

  Posted March 19, 2014 1:02 AM