The Composition of Sulfur Isotopes in Minerals from The Sheki-Hiech Cave, The Caucasus, Chechen Republic, Russia

The Sheki-Hiech cave is unique due to abundant sulfur and gypsum mineralization. The results of mineralogical and geochemical-isotopic studies of the samples from the Sheki-Hiech cave are presented in this paper. The isotopic composition of sulfur varies from −23.97 to −6.47‰ CDT. The cave is an example of an active of sulfuric acid speleogenesis.