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Ouroboros
left: OCTOSCOPE, 2017
gypsum and ferric oxide on paper, framed, 78 x 53 cm

right: OUROBOCRATIC SOCIETY, 2017
gypsum and ferric oxide on paper, framed, 78 x 57 cm

The acidic water of the bacteria (Acidithiobacillus ferrooxidans) decomposes the limestone of the marble sculpture into gypsum. The gypsum together with ferric oxide is pressed into crayons for drawings.