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Possible Meteorite.

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#1 Brett Carlson

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Posted 17 June 2013 - 08:56 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?

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What do you experts think?

#2 csa/montana

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Posted 17 June 2013 - 12:40 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.

#3 lee14

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Posted 17 June 2013 - 02:45 PM

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

Lee

#4 Brett Carlson

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Posted 17 June 2013 - 07:24 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.

#5 lee14

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Posted 17 June 2013 - 10:06 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

#6 Glassthrower

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Posted 18 June 2013 - 11:35 AM

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






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