Good Morning,
Wow, this was a great one to read over coffee. Good points made by all. Airborne, welcome to the forum and I hope you don't feel you are personally responsible for any of the sniping going on. It was well underway before you arrived and no doubt will continue for your amusement as well as education.
Bean man you are correct that you will normally recognize an artifact with 'money value' if you know the general form. I know a fellow, however, who threw back a nice celt once simply because he didn't know what one looked like. All artifacts have historical and cultural value, not all have real monetary value, but that is beside the point. You seem to have the mistaken idea that most of us that make a life's pursuit of artifacts are somehow in it for the money. Personally I don't sell artifacts....I will buy from people I know and dig with....but am not in it for the money. I wasn't when I was 8 years old and am not now.
What Cannonman and others are trying to say is that even an artifact which is crude exhibits certain characteristics. Absence of these characteristics makes it unlikely...exceeding unlikely....despite finding several examples of a similar shape...that was ever altered by the hand of man. You can use the same type of 'general rules' for locating sites. You look for placement, certain types of soil, a water source nearby, and number one, chips.....not rock, not gravel, but chips...they may be large or tiny but without chips normally you wont find other artifacts. This is a general rule. Cannonman is an accomplished flintknapper...he knows what to look for.
The majority of artifacts look like artifacts when you have the basics of identification under your belt. There is not, as some would have you believe, a whole new classification of stealth artifacts in the bottom of every creek...things that were only used once and cast aside. An artifact might get a wear pattern from use, but it is normally chipped or ground out first and then used. Not so much chipped FROM use, but chipped FOR use.
It was pointed out in a post that not all artifacts are chipped stone. This is very true. You must also remember that the same set of characteristics apply to ground stone artifacts that do chipped ones...certain things you look for, without them its probably just a rock.
Arguing over pieces accomplishes nothing.....like trying to say by a photo whether a piece is "ancient" or not. You can look for certain things which say its NOT old easier than pointing out things that say it IS. Good fakers can duplicate chipping, shape and even patina so its hard to judge based on that....if however you see a piece that is an unrecognized shape or a piece that is a known more recent type flaked as a paleo, red flags go up all over. By the same token, I can grind you an axe out of catahoula sandstone that looks wonderful in a photo, but you could crush in your hand. The indians didnt make axes out of this material and though one might look good, an authentic ancient artifact it is not.
We are all here to learn....we all have things to learn...and there is no dumb question....just unanswered ones. Experience is always the best teacher....the more you do this, the better you get at identification. I could only dream of having a resource such as this forum when I was first starting in this hobby. I can tell you if I had of, my collection today would be much larger than it is.
Here are a couple of photos of two scrapers I found, each the flipside of the other. This is the usual thing you find around here. Yellow chert with a little cortex left on the stone on one, and the other thinned a little better for cutting. Note the flaking scars on the sides and edge.
Happy Hunting,
Atlantis