Is this an arrowhead? Please help!

[Neil in West Jersey]

My son found this on the school field today during recess. It seems to be a worn arrowhead. It is tapered, thicker at the rear. Is it just a rock that naturally mimicked an artifact? The Lenapes resided in this area for thousands of years. Please help ID.
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[fieldboy]

n/t

 

[silvernail]

Going by the color and surface appearance, my guess it is nodule of the iron mineral Hematite. If so, it should leave a brownish red streak if you try to scratch a piece of unglazed porcelain with it. Hematite is the same chemically as iron rust and occurs naturally in many forms. Indians used some of the softer forms as red pigment in paint. Your pebble might also be a variety of chert (silica) containing a high percentage of Hematite. "Arrowheads" and many other tools were made from types of stone that can be made to produce a "shell-shaped" (conch-oidal) fracture such as often seen at the edge of a piece of glass. Artifacts that were shaped by making numerous planned and controlled conchoidal fractures will be fairly obvious once you learn to recognize this type of fracture.

 

[MoonDragn]

Don't think its an arrowhead unless they shrank in the wash. The arrowheads were usually much bigger, about the size of a nickel or more. That rock looks like a natural formation and it looks like felspar. They usually made arrowheads out of flint.