The results of the chemical composition of platinum minerals from ore body and placers of Nizhni Tagil massif of Ural Platinum Belt are summarized in the given article. Peculiar properties of the chemical composition of the platinum group minerals from ore body and placers are established and described. X-ray analysis data of the most common mineral species was ob-tained and the internal structure of granular aggregates and mono crystals was studied with due regard to the various irregularities.
In 1826 two unique icons were delivered to Saint Petersburg Mining Cadet corps from Zlatoust. They were named composed icons because of their background composed of different Ural stones. These icons have become the objects of the historical analysis which results are presented in this article. The documents which are kept in the Saint Petersburg and Zlatoust archives served as a basis for icons history reconstruction. The article describes the story of malachite and corund blocks delivery to the museum of the Cadet corps. This story is based on the information which was found in the one of archival documents.
