✅ SOLVED Found a stone that seems to have some type of carving

[Boomerboom]

Hello I'm new to here I really don't know where to o to get help with this ... they are excavating on my street to redo water pipes and such so me and my kids were looking through for some cool rocks and arrowheads which we did find.
A bunch of woolley mammoth was found just down the street a long time ago.
We found a stone which seems to have some chisel marks and what look like to me as some type of carving or maybe fossil I really have no idea. Just looking for help and that I'm not just seeing things .
I appreciate it and hope I can get some help

 

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[Boomerboom]

Not 100% comfortable on my knowledge of Canadian geology but I believe that there is a lot of igneous rock, which would explain the vein in it serpentine would be a good guess olivine maybe pyroxene all cause a greenish color, could be some mix of all 3

What do you think crack it open? Any chance for some type of nice quartz looking serpentine in it? I also read some serpentine has asbestos in it lol wear a mask?

 

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