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  1. Naked Science Forum
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  3. Geology, Palaeontology & Archaeology
  4. What is this stone with a thumbprint-shaped surface impression?
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What is this stone with a thumbprint-shaped surface impression?

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Offline atbsphotography (OP)

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What is this stone with a thumbprint-shaped surface impression?
« on: 11/05/2018 20:32:05 »
So I've had this rock in my little collection for a while, I picked it up when I was about 14-15 so roughly 10 years ago, it's not magnetic but metallic in nature, haven't a clue what it could be but I'm sort of more interested in the dent in it, it's the perfect shape for a fingerprint, and has bumps an grooves reminiscent of a fingerprint also.

« Last Edit: 12/05/2018 07:49:50 by chris »
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Offline chris

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Re: What is this stone with a thumbprint-shaped surface impression?
« Reply #1 on: 11/05/2018 23:31:27 »
Can you tell us more about it - where it came from, for instance?
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Offline RD

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Re: What is this stone with a thumbprint-shaped surface impression?
« Reply #2 on: 12/05/2018 00:29:03 »
Quote from: atbsphotography on 11/05/2018 20:32:05
... I'm sort of more interested in the dent in it, it's the perfect shape for a fingerprint,
and has bumps an grooves reminiscent of a fingerprint also.

[ Hint hint ]

It could be a meteorite : I can't see anything meteorwrong ...


* possible meteorite (higher contrast).jpg (102.33 kB . 708x746 - viewed 3051 times)
« Last Edit: 12/05/2018 00:52:54 by RD »
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Offline Bill S

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Re: What is this stone with a thumbprint-shaped surface impression?
« Reply #3 on: 12/05/2018 01:21:52 »
Alien fingerprint?? :)
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Re: What is this stone with a thumbprint-shaped surface impression?
« Reply #4 on: 12/05/2018 05:33:41 »
If there are flow lines in the dark areas, then i think you're definitely onto a winner ...


* flow lines Vs Unknown.jpg (109.12 kB . 1157x430 - viewed 3007 times)
http://www.meteorites.de/jpg/cdonga240.jpg
« Last Edit: 12/05/2018 19:29:08 by RD »
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Re: What is this stone with a thumbprint-shaped surface impression?
« Reply #5 on: 12/05/2018 07:48:50 »
I learned a new word today - "regmaglypt" - thanks @RD
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Re: What is this stone with a thumbprint-shaped surface impression?
« Reply #6 on: 14/05/2018 20:24:08 »
On the Naked Scientists Radio Show this week one of the guests brought in a fist-sized iron-nickel meteorite collected from a body that landed in South America a few hundred years ago.

I was able to correctly identify the regmaglypts and flow lines that were all over its surface! The assembled crowd were very impressed. What a wonderful educational environment this is!
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Re: What is this stone with a thumbprint-shaped surface impression?
« Reply #7 on: 16/05/2018 18:49:48 »
Thank you @chris @RD it seems it does have flow lines on both sides, I very rarely actually handle it so it was nice to find out what it actually is. Thank you.
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Re: What is this stone with a thumbprint-shaped surface impression?
« Reply #8 on: 16/05/2018 19:05:20 »
Quote from: atbsphotography on 16/05/2018 18:49:48
... nice to find out what it actually is ...
Try posting the image on a meteorite-specific forum to make sure, e.g. ...
http://meteorites.ning.com/forum/topics/is-this-a-meteorite-post-meteorite-id-questions-to-this-thread-on
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