Talc is a hydrous magnesium silicate. This soft, fire-resistant rock is oily to the touch. The color of talc is gray, greenish, yellow, and brown. In the Upper Paleolithic and Mesolithic eras, talc was not in practical demand by the ancient population of the forest Trans-Urals. The widespread use of talc for production purposes and in religious practices began in the Neolithic and continued in all archeological eras until the early Iron Age. When ceramic appeared, talc was added to the ceramic paste in the vessels. Treatment of the inner and outer surfaces of vessels with talc polishes also improved their quality. Not only household products (polishes, fishing sinkers) but also [items of non-utilitarian purpose…] were made from talc. The ease of processing talc contributed to its active use in the sacred sphere of the ancient population. Talc was widely used to make objects emphasizing the high social status of cult ministers. Such prestigious items included heads of figured hammers and maces, various sculptures, ironings, and jewelry. In copper and bronze metallurgy, talc-made casting molds were often used. A notable series of talc collections includes products of unknown purpose. The presence of numerous fragments of talc products may indicate their use in specific rituals.