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<p>[QUOTE=&quot;say_it_slowly, post: 2491222, member: 50&quot;]You would want to see some sign of alteration. Chipping, grinding something like that which would be different than other rocks in the area. I don&#039;t know if this information applies to the area you found this but you might look for similar information or contact the Archaeological Society/Agency in the area. There is a lot more info in the report.</p><p><br /></p><p><a href="https://pubs.usgs.gov/bul/0885/report.pdf" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://pubs.usgs.gov/bul/0885/report.pdf" rel="nofollow">https://pubs.usgs.gov/bul/0885/report.pdf</a></p><p>[ATTACH=full]266941[/ATTACH]</p><p>from page 11</p><p><br /></p><p>[ATTACH=full]266942[/ATTACH][/QUOTE]</p><p><br /></p>

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