Metal Rock ??????

[Swingit]

I found this about a week ago then I lost it.
I just found it!
I have no idea in this one
It sticks to a magnet and it is very heavy for its size 53g.
Could it be a Meteorite​

 

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[Monty]

Looks like part of a cast iron collar of some kind. Monty

 

[Swingit]

I found it in a gravel parking lot. It was right in the surface

 

[BioProfessor]

There are several things I see in the photograph that interest me. In the first photograph, it appears that there are shiny "knobs." If this is a meteorite, then there will be evidence of melting on the outside. If you look very closely at it, does it appear to have been melted?

Also in one of the pictures, one of the surfaces seemed flat. Has it been cut or did it "come" this way? If is has been cut, rub some oil on it and examine it under a 10x or higher loupe. If it is a meteorite, it will show evidence of metal crystals. The picture enclosed has been acid etched to make the crystals stand out but you should be able to make them out.

If you've got crystals and melted outside surface, the chances of it being a meteorite is almost 100%.

Daryl

 

[wesfrye53]

BP: Thx for the tips. I have a hunk of metal I was going to post...now I'll follow your guide before I do!

Swingit: Hope your find turns out to be one!

 

[Jazen]

Daryl
What kind of acid do you recommend to etch it?

 

[BioProfessor]

Nitric acid is the favored acid for etching but Phosphoric has also been used. Soaking in the acid for 3-10 minutes will usually be enough. Problem is, this is a really strong acid. I would not recommend doing this yourself. You can get hurt and hurt bad.

Do you have access to a university? Is there one close enough for you to drive to? If so, they are set up to do this and would give you a hand. If you have access to the university, they most likely have a faculty member that can look at the specimen and tell if it is a meteorite right away. If it is, they may do the etching for you in exchange for a piece of it. It would be a good trade.

If you have a university close by and can't get anywhere with them, let me know and I'll get in touch with them and try to get you in to see the person you need.

Daryl

 

[Jazen]

Even better, I am a research scientist for Amgen.
I have access to HCl and such.
Thanks

 

[BioProfessor]

Geez, here you go:

http://www.meteorite-times.com/Back_Links/2002/November/meteorites_101.htm

Enjoy!

Daryl

 

[Eu_citzen]

http://www.star-bits.com/ID.htm

As you will see a pic of Magnetite there it will be my guess.
More:

http://webmineral.com/data/Magnetite.shtml

 

[goldgrubber]

Magnetite would be my guess too.