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Author Topic: Rock?  (Read 1500 times)

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Offline bushman

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Rock?
« on: July 09, 2011, 07:50:14 pm »
Does anyone know what type of rock that is in the last two picuters? I was thinking of maybe some type of limestone. Would cooking a rock actually make it harder?http://paleoplanet69529.yuku.com/topic/30942/princeton-BC-knappable-stone
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