[meteorite-list] Nickel tests

From: cdtucson at cox.net <cdtucson_at_meteoritecentral.com>
Date: Wed, 23 Sep 2009 19:31:34 -0700
Message-ID: <20090923223134.OPYG0.331275.imail_at_fed1rmwml32>

Michael,
 I would first of all like to thank you for this great information.
Secondly , I would like to tell you that hopefully your test is definitive. As evidence that it is. I just tried to magnetize a bunch of small CD's and Odessa's that I have and none of them became magnetized. This proves you are correct at least for the ones I tried. In addition I also tried to magnetize a couple of prospects that I have and they too did not become magnetized and yet other pieces of found metal that's clearly not meteorite material did become magnetized. You are quite the genius and thank you so very much for sharing. Thank you again and again. Carl
PS they claim if results can be replicated that theory becomes fact? I hope this is now a fact because a few found irons might just get added to the "it's a keeper for more testing pile."

--
Carl or Debbie Esparza
Meteoritemax
---- Michael Murray <mmurray at montrose.net> wrote: 
> For what they are worth, here are a couple suggestions...
> If you place the suspect iron on a strong magnet, then remove the  
> magnet, the suspect iron should not retain magnetism (if it's a  
> meteorite) but should to some extent if man-made iron. Kind of like  
> magnetizing the tip of a screwdriver.  You can test the once  
> magnetized suspect iron to see if it will attract fine particles of  
> magnetite,   Not very scientific I know but it is a good indicator I  
> think.
> 
> Another thing you can try if the suspect iron is not very big is to  
> place it on a strong magnet (super magnet if you have one) and if the  
> iron piece wants to orient itself up on one of it's ends on the  
> magnet, I would rule out meteorite.  If your suspect iron is large,  
> you'd probably have to remove a small piece of it to do this test.  If  
> the small piece lays down on any of it's sides on the magnet and  
> doesn't want to orient itself, I'd put it in my 'it's a keeper for  
> more testing' pile.
> 
> I bought a couple nickel test kits.  I have tried to be as careful as  
> possible to do a clean uncontaminated test on several suspect irons.   
> After doing quite a few, I still don't trust the results.  It's not  
> that I don't get positives, I do.  It's that I've learned not trust  
> the positive tests all that much.  If I find a big enough suspect iron  
> someday with enough other indicators that it could be a meteorite then  
> I will let a lab do the testing so I can rest assured the results are  
> going to be more trustworthy than mine.  Meanwhile, my 'it's a keeper  
> for more testing' pile continues to grow.
> 
> Mike in CO
> 
> On Sep 23, 2009, at 12:27 PM, Mike Hankey wrote:
> 
> > I've done some nickel tests on some of the slag/meteor wrongs we  
> > have found.
> >
> > It tests positive for nickel.
> >
> > Does this sound normal?
> >
> > So I guess the only way to confirm slag (if you can't do it visually)
> > is to cut it open and if there are holes / bubbles then it is slag. Or
> > if the slice doesn't look like a meteorite slice it is slag.
> >
> > For the record, I am personally looking for west like fusion crusted
> > stones and this is what I am training people to look for. At the same
> > time when I get reports about weird rocks I have to follow up and take
> > a look. Not all slag looks the same, there are a lot of different
> > types. I'm getting pretty good at identifying / ruling things out, but
> > the nickel test threw me for a loop.
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Received on Wed 23 Sep 2009 10:31:34 PM PDT