Archaeologists report from the universities of Leiden and Delft it Monday. They looked manganese dioxide into pieces that were found during excavations in the Dordogne in France. Until now it was thought that Neanderthals used the black stuff for example, to decorate their bodies. But there are easier means.
In addition, the blocks were mostly found next to fireplaces. Tests showed that manganese dioxide causes wood before catching fire. “” It lowers the temperature required for ignition of 460 to 350 degrees. It is easier to ” make fire and the fire continues to burn better, says researcher Marie Soressi.
Manganese dioxide is everywhere in the Dordogne. ” But it is a soft stone. It does not burn by itself. They may not have seen in nature that it burned. They must have found itself, ” said Soressi
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