Sculpture of cubic faces of pyrite crystals from Spain and the possible reason of its arising

Study results of the collection of cubic pyrite crystals from Navajun (North Spain, Iberian Mountains) are given. For all crystals fundamental differences in the morphology of neighbouring cubic faces were found, separate growth sculptures reliably testify to selective impurities adsorption on different faces. By atomic-force microscopy (AFM) it was established that surfaces of some faces bear more traces of selective dissolution and are characterized by higher dislocations power as compared to other faces. Exactly so the signs of non-cubic nature, arising under the influence of elastic deformation in conditions of directed pressure, are shown in different sculpture of cube faces of the same pyrite crystal.