Old Bone or Ancient Tool fossil?

[lcirak]

I found this piece of limestone that seems to be too much of a coincidence for it to fit in my hand just right.  It almost reminds me of the manubrium of the sternum but then I thought it could maybe be an ancient carved tool.  It could also be just a rock :-).  Any help would be appreciated.  

Edited June 9, 2019 by lcirak
Added photos

[Fossildude19]

I am not seeing the pressure flaking,  or knapping that one would expect from a manufactured tool. 

These look like regular conchoidal fractures in chert, to me.   

 

Tools are not my forte, however, so wait for some other opinions.

[Mark Kmiecik]

Most likely not a tool. It may be a flake from a tool as it was made, but usually the only way to be positive that it is, is to find it at an archaeological dig site that shows evidence of tools being made at that location. Chips like this are frequently formed by nature in landslides, rockfalls, etc. Another way to look at it is to ask yourself what you would use it to do and then try doing that. Some things that resemble tools are not practical when used as such.

[digit]

On 6/9/2019 at 6:26 PM, lcirak said:

I found this piece of limestone

Agreed with the comments above by others. Additionally, limestone (as the stated composition) does not take and hold an edge well and would not be useful for the creation of lithic tools. Most stone tools are knapped from minerals with higher silica compositions which produce sharp edges when flaked that remain sharp for some time. It's a very intriguing piece and I too would likely have picked it up if I'd seen it out in the field. While interesting in shape, I'm afraid it is just a 'faker'--Mother Nature having fun with us.

 

 

Cheers.

 

-Ken