Energy spectra of noble metals

Mineral types of ore microaggregates (numbers of polished sections in Тable 8)

Impurities of ore minerals nanophases

Characteristics of the studied polished sections portions and geochemical micro anomalies

The most feasible compositions of noble metal nanoparticles

Pt, Pd

Anglesite-plattnerite (3)

Pyrite

Grain 4.2 × 2.9 µm. Point anomaly Ru, Pb, S and F

Pt, Pd, RuFe₃, RuO₂

Ferrihydrite-plattnerite (5)

Not identified

Late ore veinlet of 80 × 200 µm crosses muscovite-quartz with FeSi (3.9%) and siderite-hematite-kaolinite with graphite (2.9%) formations. Geochemical fields were not studied

Pt, Pd

Hematite-goethite (7)

Plattnerite. zincite, massicote, ilmenite

In the area of 25 × 8 μm – anomalous fields of K, Al, F on the background of uniformly distributed values of Pt, Pd, Au, Ag over the ore grain entire area of the size 124 × 90 μm. The edgel part of this grain consists of pyrite (67.8%), graphite (9.8%), C₂O (3.3%). The boundaries of the geochemical anomalies Ru, Pb, Zn, Fe, S, F, Cl

are determined by the grain outline

Pt, Pd, Au, Ag, their oxides and hydroxides. Ruthenium is in the form of Ru(CO)₁₂, RuF₃, RuO₂

Plattnerite-hematite (6)

Zincite

Pt, Pd, Ru

Galena (1)

Plattnerite hematite

The coincidence of Pt, Ru, Au, and Cl geochemical anomalies with the boundaries of the galena grain (1.5 × 0.5 mm), superimposed on the graphite-pyrite mineralization (pyrite – 80.5%, graphite – 15.2%)

Pt, Pd,, Ru; chlorides Pt, Ru, Au and Cl

Pt, Pd, Ru, Au, Ag

Anglesite-galena (2)

Native Pb, Fe and Zn

Ore film 32 × 20 µm on a quartz substrate containing native Al (0.2%) and cilicide FeSi (1.3%)

Pt, Pd, Ru and Ag