Re: Adena Point or Poplar Island Point?
There is no question in my mind that you have a point, not a geofact. Unfortunately, it is made of argillite, which can be a nice stone when fresh, but very quickly deteriorates in ground conditions. Nevertheless, eroded traces of flaking scars clearly are visible on your point.
The point is too eroded to make a definitive identification, but the most likely candidate is the Poplar Island. Adenas are found sparsely in eastern PA (and I believe in NJ), but they are thinner in cross-section than the Poplar Island. In terms of shape, you point looks more to me like a Poplar Island than an Adena.
artorius