SULFUR-CONTAINING SEDIMENTS OF MOUNTAIN MINING OF THE PHLOGOPIT DEPOSIT OF SLYUDYANKA IN THE SOUTHERN PRIBAIKALYE
Sulfur-containing sediments from the mine workings have polymineral composition with a predominance of jarosite and sulfur in the form of secondary minerals. Assessment of microbial activity in sediments. Heterotrophic bacteria, sulfatereducing, sulfur bacteria and iron bacteria was identified. It can be assumed that a small circulation of sulfur is carried out in the cavity. Analysis of the isotopic composition of sulfur rocks and sediments showed heterogeneity in the composition of the isotopes of the studied samples. This may indicate that repeated administration of sulfur in nutrient cycles and the sequence of its "relief. Negative values of the isotope ratio obtained for sulfur from clay sediments confirm its secondary sedimentary origin, but do not give the possibility to draw conclusions about the biogenic or abiogenic mechanism of. formation of these deposits.