An additional hobby of mine is natural glass and I've examined samples
from many areas of the world including impact, tektite, atomic, and
volcanic as well as for contrast slag glass and ancient man-made glass.
Did you have the occasion to take a good look at Wabar pearls?
I got a few more at the Denver Show, mostly "odd-shaped" ones, often meaning that they are chipped or broken.
I have been looking at the broken ones and was rather surprised. I was expecting them to be glassy all the way through like Libyan Glass or Moldavite, but that is not the case at all. I found that they are composed of a glassy outer shell packed with tiny black grains of sand (I suppose) tightly packed and glued together.
It looks as if the vitrification process was incomplete, only the outer layer turned to glass.
Any comments?
Anne Black
IMCA #2356
www.IMPACTIKA.com
e-mail: [EMAIL PROTECTED]
