Alterations

Rock type: 
Age: 
159 millions years

Russia, Chita region, Pogromnoye gold deposit. Albite-sericite-quartz metasomatite with quartz and carbonate-quartz veins and interspersed with arsenopyrite. Gold ore. Gold - 8.3 g/t. Upper Jurassic.

Rock type: 

Russia, Irkutsk region, the upper reaches of the creek of Alexander Nevsky, gold deposit - "Nevskoe". Gold ore.Quartz sulfide mineralization in paleoproterozoic quartz sandstones.Mineralization includes: pyrite, arsenopyrite, pyrrhotite, their oxides, gold, quartz and carbonate-quartz veins.

Rock type: 
Age: 
20 millions years

Russia, Khabarovsk territory, gold deposit "Bolotistoe". Weathering crust on gabbro-diorites. Contains gold. Red stripes - quartz veins with limonite. Neogene? It is found under the cover of andesite-basalts N1

Rock type: 
Age: 
20 millions years

Russia, Khabarovsk territory, gold deposit "Bolotistoe". Weathering crust on gabbro-diorites. Contains gold. Neogene? It is found under the cover of andesite-basalts N1