TY JOUR TI STUDY OF ARCHAEOLOGICAL SPECIMENS OF ANCIENT CERAMICS AND CLAY RAW MATERIALS FROM THE DEPOSITS OF CENTRAL YAKUTIA KW ceramics KW deposits of clay raw materials KW clay raw materials KW X-ray phase analysis KW thermal analysis KW chemical and mineralogical composition JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Sutakova, E.M. AU Gavriliev, D.Z. AU Mestnikov, A.E. PY 2023 IS 8 PB Belgorod State Technological University named after V.G. Shukhov