Aggregation Patterns of Salt Crystalizing in Drying Colloidal Solvents
  We report a study of the structure of droplets of colloidal gels containing dissolved sodium chloride. The components segregate and form intricate patterns. The salt crystalizes in fractal and multi-fractal dendritic forms which are determined by the material which forms the colloidal gel. Here potato starch, gelatine and carboxymethyl cellulose have been used. The substrate also plays a role in some cases. Photographs and micrographs at different level of magnification are shown. 
Moutushi Dutta Choudhury, Sayanee Jana, Sruti Dutta and Sujata   Tarafdar
cond-mat.soft physics.chem-ph