Transformation of the surface structure of marble under the action of a shock wave

The structure of marble fracture fragments formed after the destruction under the action of a shock wave have been analyzed by Raman, infrared, and luminescence spectroscopic techniques. It has been found that calcite I in the surface layer of fragments with thicknesses of about 2 $\mu$m is transformed into high-pressure phase calcite III. At the same time, concentrations of Mn$^{2+}$, Eu$^{3+}$, and other ions decrease to about onefourth of their initial values.