The ideal stone to make a tool must be hard, smooth, and if possible fine grained. It must break, not crumble under the shock.
In Europe or on other continents, prehistoric men gathered all the stones that could possibly be carved: quartzite, obsidian, basalt, jasper, chalcedony quartz and many others….and of course: flint.
Carried to the homes and on hunting trips, sometimes offered or exchanged, flint was always with the prehistoric men on their travels and trade. Identifying the different sorts of flint, the archaeologist has a way of retracing the routes followed by these prehistoric men.
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more information on this metal