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I bought this rock and its bright nature made me think. I wonder if it's an asteroid. It's not a lava stone, because it's pretty heavy and there's not even a volcano nearby. It also gives cotton a black color. And it's got little and little stuff in it. It's also pulling the magnet. 

Sorry for my Eng 













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Welcome Zeynep Karahan,

It is not a meteorite at all and has no value. I hope you didn't pay too much for it.

Take a look at your rock. If it glistens like a crystal structure (ie: quartz) at any point in the rock, it can’t be a meteorite. If it has layers, it can’t be a meteorite. It’s sedimentary. If it has small gas bubbles (vesticles) in it. It is not a meteorite, but basaltic or sedimentary. If it is moderately magnetic it is NOT a meteorite. If there is a thick crust on it, it can’t be a meteorite. If it has very rough surfaces or is angular, except for breakage, it is not a meteorite. If it is heavy, but not much heavier than other similar sized rocks, it isn't a meteorite. File off a corner or cut it. It won’t diminish its value. If there is all bright silvery metal it isn’t a meteorite. If it is all grey metal it can’t be a meteorite. If there is black crust as thin as a fingernail, and crazing on the outside of the rock, it might be a meteorite. If there are small silver specks visible in the filed off section, it might be a meteorite.  

A simple test for your rock is to take the top off a toilet tank and make a hard streak with it on the unpolished porcelain underside.  If the streak is dark red or gray it is magnetite or hematite and is not a meteorite.

 There are billions of magnetic rocks in the US, none of which are meteorites. Anyone can find magnetic earth stones nearly everywhere. Approximately 4% of all terrestrial rocks found in all of the 50 states are moderately magnetic. Just take a strong magnet and drop it into sand and you will see what I mean. Check our O Richard Norton’s, “Rocks from Space” or visit the ASU Meteorite Center.

Keep looking down. They’re out there.


Edited by billpeters
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  • 1 month later...

It means that the iron in the rock that is attracting the magnet is a mineral. That means the rock is from earth and not a meteorite. 

A red or brown streak means the iron attracting the magnet is fully oxidized. There is no oxygen in space. The rock is from earth.

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