From the pictures, this is a Pallasite (a Stony-iron Meteorite)... a rare type of meteorite! It consists of olivine crystals (as a gem stone, it is also called Peridot) in a nickel iron matrix. Usually goes for around $5.00 a gram, so a cool million may not be that far-fetched for a monster this size.
Being a meteorite collector, it would be a crime to make this into a edged weapon... an expensive crime at that, even before removing the olivine.
Several Pallasites have been found in Kansas. At $5.00 a gram... anyone have a metal detector?
