[meteorite-list] Campo Crystals
Hi All, I suspect that the smoothed/melted look on Campo crystals is created in a rock tumbler. After the mass has been reduced to fragments each individual should be extremely sharp; I expect they get tumbled, perhaps with ball bearings, to round off the points and sharp edges and make them safe to handle without getting "bit"! Happy hunting, Brian __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Campo crystals
Thanks Mike (and everyone else who replied) I haven't heard that before - would the explosion cause localised melting, I wonder? As you say, it is sad to think of all those Campos being blown up. Regards, Kieron -Original Message- From: Mike Bandli [mailto:fuzzf...@comcast.net] Sent: 22 November 2012 16:36 To: 'Kieron Heard'; 'Meteorite-List' Subject: RE: [meteorite-list] Campo crystals 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! Mike Bandli -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 --- This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Kieron Heard Sent: Wednesday, November 21, 2012 11:01 PM To: Meteorite-List Subject: [meteorite-list] Campo crystals Hi Folks, 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. Regards, Kieron __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Campo crystals
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! Mike Bandli -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 --- This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Kieron Heard Sent: Wednesday, November 21, 2012 11:01 PM To: Meteorite-List Subject: [meteorite-list] Campo crystals Hi Folks, 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. Regards, Kieron __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Campo crystals
Hi Kieron and List, Good question. I'm curious as well about why some of the pieces look "molten". Best regards, MikeG -- - Web - http://www.galactic-stone.com Facebook - http://www.facebook.com/galacticstone Twitter - http://twitter.com/GalacticStone Pinterest - http://pinterest.com/galacticstone RSS - http://www.galactic-stone.com/rss/126516 - On 11/22/12, Kieron Heard wrote: > Hi Folks, > > 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. > > > Regards, Kieron > > __ > > Visit the Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Campo crystals
Hi Kieron and List, There is an article by Roland Dietrich & Stefan König in "Meteorite!" (February 1997, pp. 28-29) about the "Gibeon Iron Meteorite in Perfect Crystals". Maybe their article can explain (some of) your observations! Best wishes, Bernd __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Campo crystals
Hi Folks, 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. Regards, Kieron __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
