ground stone artifacts - Archaeology Southwestor grind, essentially any stone item not considered . smooth rocks because a rough texture abrades rather . example, if rocks of appropriate size for metates.are crush rocks are an artifacts,are crush rocks are an artifacts,the artifacts of the potomac valley indians - AnthroSourceTHE ARTIFACTS OF THE POTOMAC VALLEY INDIANS . POTOMAC VALLEY ARTIFACTS .. dioritic rock and probably used for crushing corn or the like was.Chert, Fact Sheet – PUB661 - Missouri Department of Natural .Chert is also a rock of many names and disguises. . Artifact collectors generally call the stone flint. . common sedimentary rocks of Missouri. Gravel operations often excavate chert from Ozark streams and crush it for use as an aggregate.
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