I need some ID help with Michigan artifacts or geofacts please.

[blueracer]

Can anyone tell me anything about the following things, like age, and purpose please?
Ok,
(1)I think its a safe bet to say this is a hammer, any way to tell age? found in michigan, either near ohio border, or near saginaw. cant remember.
(2) the black stone, found in ottawa county. is this an artifact, or a geofact? This is the one I am most interested in.
(3) what period might this point be from? is the base broken or is it supposed to be that way? Found in kent county, michigan.
thank you for your help!

 

Amazon Forum Fav 👍

A Handbook of Civil War Bullets and Cartridges - Grab it through Amazon!

[quito]

Stone hammer looks to be a full groove, they say that they are the oldest of the grooved hammers and axes.

Black one looks like geofact, and the point is very nice!!

 

[The Grim Reaper]

The first piece looks to be a Full Grooved Maul and a pretty nice one.

The black piece is a natural stone.

The Point does look like the base has been broken off.