Went kayaking on Sunday afternoon and came back with this lump. What do you think? the base is flat and scratched up; hard rock surface kind of bumply.
I"m guessing it's a tool of some kind, but don't know exactly. Grinder? What do you think this is?
I know glacier striations. This was pulled from an area filled with mudrock and sedimentary rock, and it's an unusual kind of stone for the area. The base is flat. The major top groove is pretty wide. I appreciate that most celts will be smooth, but there's also a need for more raspy grinders, I think.
I'm reconsidering here: it occured to me that if I was using a grinder, I'd use the long side and whatever scratching would run in one direction.
I would think that's the usual usage.
The flat base really speaks to being a tool (yeah, I know rocks can have a flat side, but this is pretty more flat), though. The hard rock also does, being found in an area filled with soft rock.
Maybe some poor soul in a gold field lacking a file touched up the edge of a shovel with it.
No indication of the areas context.
Desert S.W.? Maybe used on a battered machete.
A site on the East coast with known scrap metal being used to shape material?
Material looks like it would shed abrasive. So food/grain/nut grinding is out. Would be hard on the teeth.