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A wide range of prehistoric artifacts were formed by pecking grinding or polishing one stone with another Ground stone tools are usually made of basalt rhyolite granite or other macrocrystalline igneous or metamorphic rocks whose coarse structure makes them ideal for grinding other materials including plants and other stones Native Americans used cobbles found along streams and inGet Price
Apr 02 2020 · The large stone metate had a bowllike hollow that held food The mano was held and used to grind the food against the hard surface of the metate The resulting grounds had a mealy texture Some Native American tribes would use a large communal rock for grinding and the women of the tribe would gather to socialize while workingGet Price
Grinding and Pounding Stones These stones are mostly used for gringing purposes Much of the material that was being ground also required some pounding action The majority of these tools show this dual use and have surfaces for grinding and surfaces edges and corners that were used for poundingGet Price
Sep 29 2017 · Pecking and grinding of hard granite provided longlasting tools and stone implements In 2011 stone artifacts from 15500 years ago were discovered in an archaeological dig near Austin Texas the oldest credible archaeological site in North America according to archaeologist Michael R Waters of Texas AM UniversityGet Price
Sep 14 2020 · Woodland Indian Stone Fire Starter Item G6 Fire Starter Stone Size 4 wide Material Sandstone Age Probably Woodland 2500 1250 BP American Indian Tools Grinder This wellworn handsized grinding stone was likely used to start fires by protecting the palm or as a base stone while twirling the starting stickGet Price