Hello Norm,
I have some of this material. It is was't especially cheap but not
unaffordable. I came upon it 5 years ago from the
finder/co-colector(?). It is a beautiful curiosity but I was given a
different origin story.
According to the finder, this came from totally encased voids in
Pliocene ( or later) lava flows where a low-viscosity, fast-flowing
lava encased standing timber. While most all trace of the timber was
burned away, there were minor amounts of charcoal recovered.
The "drippings" are a higher quality glass that show flow. Owing to
their long fragile lengths and pristine surfaces, they had to drip
slowly and intermittenly into a sheltered void to avoid weathering. I
presume these flows dribbled into the chamber over some time period as
some stalactite-stalagmite like forms were observed in some of the
samples. As I recall there were some branch like cavities uncovered.
Each had these glass gardens. In fact they looked a lot like classic
cave formations but o evaporation was involved in their growth.
They are attractive in any event but, too many differences from
fulgurites. The forms are too smooth, too perfect a surface for a quick
lightening flash heating. These were hot for a longer time. Some were
green to yellow and remind me of Hawaiian lava tube formations ,
iridescent in some etc.
Given the cavity shapes, charcoal fragments and long fragile Pele
tear-type shapes I favor the lava flow theory of origin.
Regards,
Elton
Norm Lehrman wrote:
List,
A guy came in today with a flat of shiny black glass
that looks identical to Wabar or Irghizite impactites.
It has been studied and published, and was spewn from
a monster fulgurite tube!
Most dealers, curators, academics, and collectors are
bombarded with stuff like this. I didn't believe the
story when I heard it, but it's for real. This is the
first described example of this and is the designated
type locality. There has to be more somewhere.
I've posted the reference info and a pic here:
http://tektitesource.com/Exogenic%20Fulgurites.htm
I'm now faced with a dilemma. Tucson is coming.
We're hoarding our cash. But this is totally unique
stuff. They want a lot for it. What would you do????
Thanks,
Norm
(http://tektitesource.com)
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