I like to use my microscopic camera on small stones that I find and on one such stone I found these I can't really tell their size as they were looked at through my microscopic camera but I will say they are extremely tiny....the stone itself is about an inch and a half....I found a few odd little things and am wondering just what they may be?
I found the stone in the gravel drive possibly from a load from the Brazos river west of Houston Texas USA.