#chalk
Follow to get notified about new posts with this tagPolish chalk deposits were already exploited in the Middle Ages / Polskie złoża kredy eksploatowane były już w średniowieczu.
🇬🇧Chalk is a soft and powdery type of limestone🪨 made out of little marine organisms🌊. In Poland, its deposits can be found mainly in the East, e.g. in Mielnik, Stara Kornica, Zamość and Siedlce🇵🇱.