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Pictured is a pre-contact sandstone abrader, as seen Sept. 13, 2017, used by Native Americans hundreds of years ago, that was found at Fort McCoy, Wis. The artifact was recovered from one of the pre-contact archaeological sites at the installation. Abraders were used by native peoples for grinding, shaping, polishing, smoothing, and sharpening materials such as stone, bone, antler, and wood. They are made of granular, coarse or rough-to-the-touch stones that serve well as abrasive materials. Sandstone is the most common material used to make an abrader. Abraders are typically identified by the appearance of abrasion marks or worn grooves. One specific example of an abrader’s function was to smooth the shaft of an arrow by placing the shaft between two pieces of sandstone, also known as bar abraders. (Photo by Colorado State University Center for Environmental Management of Military Lands)
| Date Taken: | 09.13.2017 |
| Date Posted: | 10.27.2017 10:22 |
| Photo ID: | 3906634 |
| VIRIN: | 170913-A-A4608-919 |
| Resolution: | 2354x2316 |
| Size: | 713.74 KB |
| Location: | FORT MCCOY, WISCONSIN, US |
| Web Views: | 87 |
| Downloads: | 2 |
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