Awesome find! Definitely a copper spear point, around 3000/3500 years old. Look up Old Copper Culture on Google. Native Americans didn't smelt metal like over in Europe, but they did find natural deposits and nuggets of copper ore. They just cold hammered them into shape. These types of artifacts are scattered around the Great Lakes, with the Wisconsin area seemingly the core area, but they do occur in several states around the Great Lakes, including upstate New York. I know of one confirmed Old Copper Culture artifact here in the Wyoming Valley of Pennsylvania where I'm from, a socketed adze (a woodworking tool). As far as I know, this is the only culture and the only place where these types of artifacts exists. It's a great find, those types of artifacts are really not that common. Congratulations on a great hunt!