Gold typomorphism in metasomatites of gold-sulfide deposit (Middle Urals, Trans-Ural megazone)

Typomorphic features of gold of gold-sulfide deposit (Middle Urals) are revealed. Mineral compositions were determined using micro-X-ray spectral analysis. The studied coarse free particles occurs in the form of silver gold (up to 7.01 wt. % Ag). When studying gold inclusions in sulfides, 2 varieties by chemical composition of gold inclusions were noted: mercury gold (up to 2.87 wt. % Hg) and silver gold (up to 6.28 wt. % Ag). A rare find of gold telluride, calaverite, was noted as an inclusion in pyrite, the average chemical composition of which (wt. %) is: Au = 45.20 ± 1.33, Te = 54.18 ± 1.38. The forms of gold, its companion elements and carrier minerals have been determined. The technology of mineralogical research with the use of electric pulse disaggregation allowed to avoid overgrinding of the studied samples and to identify mineral, micromineral forms of gold and its satellites by means of hydroseparation method.