MINERAL COMPOSITION OF HEAVY FRACTION OF UPPER VISEAN OF TERRIGENOUS DEPOSITS OF THE KURSK GRABEN
Studying of minerals of heavy fraction of the Kursk graben showed that provenance area was heavily altered crust of weathering to what existence of steady minerals testifies were demolition sources for them. Weathering was so intensive, what even zircon transformations in cyrtolite. As in upper visean deposits the pyrites presence which existence can be perceived as result of diagenetic process with recovery conditions is noted.