A careful scanning tunneling microscope (STM) observation has been made on the
micrornorphology structure of the crystal faces for a group of pyrites which include two types of
pyrite specimens: natural pyrites, from the different stage of hydrothermal ore deposits and artificial
crystal of pyrite. It has been discovered that there is a set of micromorphological structures
on the surfaces of pyrite crystals, including pisolitic hillocks, lotus root-like hillocks and spiral
steps. This study reveals that the micromorphology of pyrite crystals, which are closely related
to thermodynamic conditions and dynamic environment of the ore-forming systems, carries a lot
of genetic information.