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A hard glassy kind of a rock used to make stone tools during the stone age is __________. |
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Answer» Answer: OBSIDIAN, a volcanic glass of rather limited distribution, is usually black or very DARK and, because of its conchoidal fracture, was used like flint. Most edged rock tools, however, were of flint. Flint was once an OBJECT of trade, and flint MINES were in Neolithic time what iron mines BECAME at a later age. Explanation: this is answer |
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