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Speciality Forums >> Space Rocks

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Brett Carlson
sage


Reged: 12/12/11

Loc: Rochester, NY
Possible Meteorite.
      #5925122 - 06/17/13 09:56 AM

An old high school friend sent these over to me. It's a small rock but weighs over two pounds. It is magnetic.

Possible Meteorite?





What do you experts think?


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csa/montana
Den Mama
*****

Reged: 05/14/05

Loc: montana
Re: Possible Meteorite. new [Re: Brett Carlson]
      #5925560 - 06/17/13 01:40 PM

You could try the "streak" test. Scratch it on the underside (unglazed) of your toilet bowl lid. A meteorite won't leave a streak. Common iron minerals tend to leave red, brown, or gray steaks.

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lee14
super member


Reged: 12/19/09

Re: Possible Meteorite. new [Re: csa/montana]
      #5925806 - 06/17/13 03:45 PM

Iron meteorites are not typically magnetic, but of course due to their composition they are strongly attracted to a magnet.

Lee


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Brett Carlson
sage


Reged: 12/12/11

Loc: Rochester, NY
Re: Possible Meteorite. new [Re: lee14]
      #5926277 - 06/17/13 08:24 PM

My friend said it left a silver streak on the underside of a toilet lid. I also scratches glass. According to a test run at their High School it has cubic cleavage...whatever that is.

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lee14
super member


Reged: 12/19/09

Re: Possible Meteorite. new [Re: Brett Carlson]
      #5926555 - 06/17/13 11:06 PM

Iron forms cubic crystals under the proper conditions (mainly temperature). Iron pyrite (iron disulfide) can display a cubic form as well, which in a pure state often appears as gold colored cubes, usually in a matrix. Your piece could also contain magnetite (iron oxide), which is magnetic.

Lee


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Glassthrower
Vendor - Galactic Stone & Ironworks
*****

Reged: 04/07/05

Loc: Oort Cloud 9
Re: Possible Meteorite. new [Re: lee14]
      #5927448 - 06/18/13 12:35 PM

Looks like a slag of some sort to me....

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