[meteorite-list] Magnetism On The Angrite Planetary Body

From: Greg Hupe <gmhupe_at_meteoritecentral.com>
Date: Tue, 24 Aug 2010 15:30:55 -0400
Message-ID: <688D2969356F4107951EBC41E5B7198E_at_greg323a964987>

Hello All,

Here is an abstract by Dr. Ben Weiss of MIT, the same scientists who took a
core sample from my angrite, NWA 4931 (main mass of the NWA 2999 grouping):
http://www.lpi.usra.edu/meetings/lpsc2008/pdf/2143.pdf

While magnetism 'sampling' from NWA 4931(NWA 2999) indicated it was most
likely 'polluted' from strong earth magnets possibly by Moroccan testing at
time of find, it did help Dr. Weiss's experiments which are not completed at
the time of this abstract.

Best regards,
Greg

====================
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----- Original Message -----
From: "Meteorites USA" <eric at meteoritesusa.com>
To: <meteorite-list at meteoritecentral.com>
Sent: Tuesday, August 24, 2010 1:44 PM
Subject: Re: [meteorite-list] Magnet canes are evil


> Curious about the magnetic properties of meteorites as well. We all know
> that you can magnetize metal just by placing it near a powerful magnet.
>
> I read yesterday in Richard Kowalski's post about Brother Guy
> Consolmagno's visit to Tucson. Dr Concolmagno's research also includes
> the study of magnetic properties of meteorites. I'm sure he's not the
> only person to study these properties, but it got me to thinking about
> it. If one does in fact use a magnet cane on a meteorite, do you impart
> any magnetic field into the meteorite? I would think yes, even if it is
> small on a scale only readable by the most powerful equipment.
>
> My question is does it cause problems with analyzing/testing? Is this a
> form of contamination?
>
> My question would of course then be... Why use a magnetic cane at all?
>
> If you think about it, we're "taught" NOT to remove a meteorite from
> it's original location until we get in-situ photos, and record GPS
> coordinates of the find. If you use a magnetic cane, the meteorite will
> be removed from it's ancient resting place as it "snaps" onto the magnet.
>
> Eric
>
>
>
>
> On 8/24/2010 10:10 AM, Matson, Robert D. wrote:
>> Mark wrote:
>>
>>
>>> As soon as everyone stops using metal detectors and magnet canes
>>> to look for meteorites then the first Lunars in Europe or USA
>>> will eventually be found, .... until then!
>>>
>> I have never used a magnet cane, nor will I ever, and I always
>> advise new hunters against their use. A magnet cane is basically
>> an H-, L-, iron, and stony-iron filter. I sometimes carry an LL6
>> with me to the desert on the off-chance I'll run into someone using
>> a magnet cane. That usually "cures" them. ;-)
>>
>> --Rob
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Received on Tue 24 Aug 2010 03:30:55 PM PDT