[meteorite-list] Campo crystals
From: Mike Bandli <fuzzfoot_at_meteoritecentral.com>
Date: Thu, 22 Nov 2012 08:35:50 -0800
A couple years ago we spoke to a vendor from South America at Electric Park
(Tucson show) who had Campos for sale. We noticed that he was selling Campos
that had strange marks that looked like welding marks. He told us that they
were holes that had been drilled and later refilled with Campo/welding
material. The reason? He said the holes were refilled because they ran out
of C4 to make Campo crystals. Apparently they used to bore a hole in the
iron, fill it full of C4, bury it deep in the ground, then BOOM! Campo
crystals were born. I do not recall if cryo/freezing was involved. He had at
least a dozen Campos that had these welded holes. It was an interesting
conversation to say the least. Kind of sad and amusing at the same time.
Happy Thanksgiving all!
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From: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Kieron
Sent: Wednesday, November 21, 2012 11:01 PM
Subject: [meteorite-list] Campo crystals
Can anyone explain to me the process used to make so-called Campo del Cielo
'crystals'? The usual explanation, that they are made by shattering larger
pieces than have been supercooled with liquid nitrogen, does not convince
me. If that were the case I would expect more geometric forms with sharp
edges. However, many examples are quite rounded and look as though they have
been (recently) molten. I would be grateful for any observations.
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Received on Thu 22 Nov 2012 11:35:50 AM PST