You've had the hyalite and precious opal, both a form of silica, and both of which form under relatively low temperatures...
...now for something a little different. This is a photo of a 'fulgarite' - fused sand where it has been struck by lightning, location Evan's Head, New South Wales (my son's name is Evan. Hope it never hits him in the head).
The first image shows it side on and it is about 3cm long. The second shows the tube where the lightning bolt hit and fused the sand. This image about 9mm across.
Now, who's for a round of golf this nice sultry day
It is said that lightning strikes the earth around 100 times per second (obviously not all in the one location!)...and around 3,000 people are struck each year.
more silica - with a difference!!
Moderators: rjlittlefield, ChrisR, Chris S., Pau
more silica - with a difference!!
Last edited by crocoite on Sat Feb 17, 2007 7:12 pm, edited 1 time in total.
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Hi Steve, we have had fulgarite for sale at the store here. very interesting stuff once you know the story behind it. very nice pictures. I should take pictures of our Coprolites
Last edited by beetleman on Tue Oct 10, 2006 3:45 am, edited 1 time in total.
Take Nothing but Pictures--Leave Nothing but Footprints.
Doug Breda
Doug Breda