Dating sajtovi

Afterwards the hard ore mass was broken into pieces by circular hits with stone mallets, hanged either on a rope or leather belt.In the depths, the technique of heating then cooling suddenly was used.The metalworkers had apparently discovered that these ores yielded a superior product.When archaeologists put metal artefacts in chronological order, they have always assumed that as metals technology evolved, simple designs and materials would gradually be replaced by more sophisticated and specialised ones.Exposed areas of such deposits are converted to secondary minerals such as oxides and carbonates.Within some primary copper deposits are the ‘fahlerz’ ores, which contain arsenic and the metal antimony.Large ceramic dishes were used for pouring the water over the hot ore blocks.

Various arguments were put forward in favour of this idea, stressing the advantages of arsenical copper over pure copper as a material for making tools and weapons.Weitere Informationen zu unseren Cookies und dazu, wie du die Kontrolle darüber behältst, findest du hier: Cookie-Richtlinie.The early Neolithic mine of Rudna Glava near Majdanpek is an example of the oldest known technology of Vinca copper working.By then, metalwork typologies for Britain were already well developed as were ideas, partly based on them, about the origins of British metallurgy.The appearance of metals in the archaeological record of the British Isles was associated with other changes, particularly a shift in burial practices and the appearance in graves of a new form of pottery, shaped like a small cup or beaker.

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