Thanks,
What i have found has been chunk.  The reason i thought it might be usable is i have identified several locations where the indians,(Choctaw) in that area camped and there are or were mounds of fragments including broken points.  I may not be clear about the differance between quartz and quartzite.  i would assume cobbles would more likely be found in the stream beads. i imagine my ignorance is shining quite brightley about now.
jm