Abstract
Summary The results of studies of rocks and ores of the Krasny deposit located on the territory of the Baikal-Patomsky upland (north of the Irkutsk region, Russia) are presented. According to the study data, the ore mineralization of the deposit was formed in the conditions of the green-shale facies of metamorphism (200–400° C). The following sequence of mineral formation is recorded: Early framboidal and micrograin pyrite (I and II), with nanoparticles of native gold evenly distributed over the surface, is superimposed with a high-temperature association of ore minerals, including arsenopyrite, pyrrhotite, pyrite-III, native gold, galena, sphalerite, and faded ores, associated with the development of regional metamorphism of the green shale facies. At the post-ore stage, pyrite-IV crystallizes in the quartz-carbonate rim.
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