Rare Minerals Illuminate 17,000-year old Questions

Scientists learned it straight from the bull's muzzle: cave painting shows evidence of ancient trade. In collaboration with French museums and research facilities, Stanford researchers have found evidence of scarce manganese oxide mineral exchange between prehistoric peoples of the French Pyrenees.

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<p><a href="http://www.physorg.com/news93277426.html">Rare Minerals Illuminate 17,000-year old Questions</a></p> <p>Scientists learned it straight from the bull's muzzle: cave painting shows evidence of ancient trade. In collaboration with French museums and research facilities, Stanford researchers have found evidence of scarce manganese oxide mineral exchange between prehistoric peoples of the French Pyrenees.</p>