Crystallization of a calcite ball in NaN03 solution

Abstract

A hemisphere with a radius of 5 mm was cut out of a soldered piece of calcite. with a diametrical plane (110) (plaques, cleavages). This hemisphere, glued with wax to a glass hemisphere of the same diameter, was suspended by a thread in a supersaturated NaNO₃ solution. Previously, to clean the surface of the calcite hemisphere, the ball glued together in the above manner was immersed in a weak hydrochloric acid solution for several seconds.