[meteorite-list] non-magnetic meteorites?

From: Michael Gilmer <meteoritemike_at_meteoritecentral.com>
Date: Tue, 24 May 2011 12:32:52 -0400
Message-ID: <BANLkTimFRMBaF0=MjZ0z-nLqJUSZsPwD9Q_at_mail.gmail.com>

Hi Greg and List,

Thanks for bringing up eucrites and howardites. :)

A while back, I was cutting a howardite stone for a friend, and I
noticed a big "ball bearing" metal inclusion. It was about 1cm in
diameter and it was visible on the surface of the stone, poking
through the crust. The majority of the stone showed almost no
attraction at all to a magnet, but that "ball bearing" stuck firmly to
the magnet.

Pure basaltic eucrites typically show no attraction, but some
brecciated eucrites do have free metal content. Camel Donga also
comes to mind as a eucrite that shows a mild attraction to a magnet.

I guess for those looking for a fool-proof magnetic litmus test to
seperate the wrongs from the 'rites must always be on their toes -
meteorites like to throw us curveballs to keep us honest. :)

Best regards,

MikeG

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On 5/24/11, Thunder Stone <stanleygregr at hotmail.com> wrote:
>
> David/List:
> I believe the following meteorites can have no, or negligible magnetic
> pull.RumurutiitesHowarditesEucrites - may have slight
> pullDiogenitesLunarsAubrites
> and perhaps Martian, but they may have a slight attraction
> Sounds very interesting
> Greg S
>
> ----------------------------------------
>> Date: Tue, 24 May 2011 11:41:55 -0400
>> From: davidgunning at fairpoint.net
>> To: meteorite-list at meteoritecentral.com
>> Subject: [meteorite-list] non-magnetic meteorites?
>>
>> Hi All,
>>
>> It's commonly understood that all meteorites are magnetic to varying
>> degrees, or so I've read. I'm wondering if there are any exceptions to
>> that iron clad rule of thumb?
>>
>> I've a non-magnetic mineral specimen with a black crust and what appear
>> to be some sort of orientation striations.
>>
>> The specific gravity of this specimen is lower than the range of values
>> usually associated with most meteorites.
>>
>> Prolly a meteorwrong, I realize, but causes me to pause and wonder if
>> it's within the realm of remote possibility that there are such animals
>> as non-magnetic meteorites?
>>
>> Thanks for your indulgence in helping diminish a wealth of personal
>> ignorance in the somewhat occasional arcane field of meteorite
>> identification.
>>
>> All good regards,
>>
>> David Gunning
>>
>>
>>
>>
>>
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--

Received on Tue 24 May 2011 12:32:52 PM PDT