Modelization of mineral dendrites
With Bastien Chopard and Tamas Vicsek
we modelized dendrites of manganese oxyde
as the one from Solnhoven (Baviera) seen on the photo.
As described in our
paper published in Nature, Vol.353, p.409-412 (1991)
the model is based on diffusion and reaction and produces
fractal patterns with a dimension that agrees with
the measured ones.