N-like areas, as a consequence of the(sample Bar_2-1, Rusty zone). (aN-like areas, because of the(sample

N-like areas, as a consequence of the(sample Bar_2-1, Rusty zone). (a
N-like areas, because of the(sample Bar_2-1, Rusty zone). (a) and visible gold on an enlarged fragment of the sample (b) (sample Bar_2-1, Rusty zone). have a tendency on an enlarged fragment with the sample (b) irregular flow of hydrothermal solutions. and sulfosalts Additionally, native gold is discovered in paragenetic intergrowths with chalcoGuretolimod site Pyrite (Figure four.two. 4b). The fundamental Ore Minerals Pyrite is definitely the most abundant sulfide in the Baranyevskoe deposit. Some analyses of pyrite (additional than 30 ) contain As as a minor element. As-bearing pyrite forms intermittent development zones with As-free pyrite grains (Figure 5a,b). This oscillatory zoning observed in some pyrite grains and sulfosalts of epithermal deposits [28,29] is as a consequence of fluctuations in the characteristics on the hydrothermal fluid through the growth of minerals.Minerals 2021, 11,six ofFigure four. Sample of sericite-adularia-quartz composition with crustified-breccia texture containing disseminated sulfide and sulfosalts (a) and visible gold on an enlarged fragment with the sample (b) (sample Bar_2-1, Rusty zone).four.2. The basic Ore Minerals four.two. The fundamental Ore Minerals Pyrite could be the most abundant sulfide at the Baranyevskoe deposit. Some analyses of Pyrite would be the most abundant sulfide at the Baranyevskoe deposit. Some analyses of pyrite (a lot more than 30 ) include As asAsminor element. element. As-bearing pyrite types pyrite (a lot more than 30 ) contain a as a minor As-bearing pyrite forms intermittent growth zones with zones pyrite grains (Figure 5a,b). This oscillatory zoning observed in intermittent growthAs-freewith As-free pyrite grains (Figure 5a,b). This oscillatory zoning some pyrite some pyrite grains and sulfosalts of epithermal deposits [28,29] is because of observed in grains and sulfosalts of epithermal deposits [28,29] is because of fluctuations in the qualities of the hydrothermal the hydrothermal fluid of minerals. The concentration fluctuations within the qualities of fluid through the growth throughout the growth of minerals. of As in pyrite varies from pyrite varies reaching up grain, reaching up 5c) while The concentration of As in grain to grain,from grain toto 7.four wt. (Figure to 7.four wt. no other trace ML-SA1 Purity & Documentation components other trace elements have in far pyrite of the Baranyevskoe deposit (Figure 5) even though no have so far been identified so the been identified in the pyrite from the (Table 1). Baranyevskoe deposit (Table 1).Figure 5. Back-scattering electron mode (BSE) canning electron microscope (SEM) pictures of As-containing pyrite grains Back-scattering electron mode (BSE) canning electron (a,b) and the unfavorable correlation S versus As in pyrite of Baranyevskoe deposit (c). Baranyevskoe deposit (c). Table 1. Composition of the grains of gold the Baranyevskoe deposit, wt.regions from the Baranyevskoe Two hundred key sulfides of from unique zones and . No. Zone Sample1 Rusty 2 Rusty three Rusty Bar-2-1 44.98 4.90 49.74 99.62 four Central Bar-3-1 46.29 0.77 52.74 99.80 Baranyevskoe deposit,99.56 . wt. 5 Central Table 1. Composition on the main sulfides from the 2.25 Bar-3-1 45.87 51.44 six Hanging Bar-4 45.32 1.12 52.38 98.82 No. Zone Sample Fe Cu Bi As S Total 7 Northern Bar-5-1 46.19 0.82 52.73 99.74 1 8 Rusty Bar-2-1 38.67 99.94 Northern Bar-5-161.2745.85 1.62 51.75 99.22 Northern Bar-5-160.7345.72 two.31 51.79 99.82 2 9 Rusty Bar-2-1 39.ten 99.83 ten Rusty Northern Bar-5-144.9845.81 two.35 51.55 99.71 three Bar-2-1 4.90 49.74 99.62 11 Southern Bar-6-5 45.36 3.96 50.98 one hundred.30 four Central Bar-3-1 46.29 0.77 52.74 99.80 12 Southern Bar-6-.