The paper examines the features of the material composition of subcoal, coal-bearing and supracoal deposits in connection with the problem of metal content of the Pavlovskaya Depression located on the southern edge of the Khankaisky median massif in Primorsky Krai. The tested stratigraphic levels are characterized by a similar composition, but differ in the percentage content of the main and accessory minerals (quartz, kaolinite, zircon, garnet, anatase, leucoxene, ilmenite and rutile, etc.). Morphological and compositional features of common accessory and ore minerals are established. As a result of the study, previously published data on the forms of occurrence and transfer of germanium, tungsten, antimony, arsenic and rare earth elements (REE) in sedimentary deposits and the weathering crust of the Pavlovskaya Depression were confirmed, which indicate the hypergene genesis of the Spetsugli germanium-coal deposit. The source of the rare element group entering the coals were greisenized granites of the basement; for Ge, W, As, Sb the hydrogenic form of transfer is confirmed, for REE the hydrogenic-clastogenic form. The source of the rare particles of flaky gold found in the Neogene deposits has not yet been established.
A.I. Matveeva (Wed,) studied this question.