There are so many different types of Rhyolite in NC that I never get tired of looking for it.
For example here's a sample of points I've found right around where I live in Northern
Wake County. There's about 10 different types represented here.
Now this ain't rhyolite but here's a close-up of the one you can't see well in that pic.
So I had the time to get out and check a site that I haven't been to in a couple of years.
It's been dry around here and hunting season hasn't started yet, so it was a good time
to check it out. Each area or out-cropping of rhyolite will have maybe dozens of different
types of material. Not all of them are knappable. There are several different areas along
this powerline that you can find good, to great, material.
One sure sign that you are in an area of good material is when you see the ground
littered with flakes and broken pieces. It's a good sign that the natives quarried the rock
and if it was good enough for them...............
Close-up of edge of ditch. Kindof looks like some of y'alls backyard.
Here's a piece that didn't pass the grade, so it's leaverite.
Like a lot of the material east of the Appalachains, it has been warped and fractured
by ancient geologic episodes, but still might be good for making points under 2 inches.
Here's another outcrop close by that was not good enough material to be quarried.
And a piece of leaverite from it.
So it's not enough to just find rhyolite. You've got to pick thru it until you find
the good stuff. Here's a pic of what made it home with me to be busted up
and checked out further.
Still need to find some new sources, but the NC Slate Belt is all rhyolite, so there's
plenty of ground to cover. Just got to find the time.
Hope this helps some,
Joe