What is this black, amorphous piece of rock?

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Offline tkeener

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What is this black, amorphous piece of rock?
« on: 30/04/2014 01:53:45 »
If anyone knows what this is I would love to know!


« Last Edit: 03/06/2016 21:31:58 by chris »

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Offline Ethos_

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Re: Need help identifying this!
« Reply #1 on: 30/04/2014 02:30:24 »
If anyone knows what this is I would love to know!



Have you checked to see whether it's magnetic or not? If it contains sufficient amounts of iron, it may be a meteorite. If it's not magnetic, then it might be volcanic in origin.
« Last Edit: 30/04/2014 02:32:06 by Ethos_ »
"The more things change, the more they remain the same."

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Offline tkeener

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Re: Need help identifying this!
« Reply #2 on: 30/04/2014 02:50:12 »
Hi! I checked to see if it was magnetic and it isn't. I was figuring it was some type of volcanic origin but no one believed me. I found it on the road where the county had dredged from the ocean and used it for the road.

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Offline RD

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Re: Need help identifying this!
« Reply #3 on: 30/04/2014 04:28:23 »
Hi! I checked to see if it was magnetic and it isn't. I was figuring it was some type of volcanic origin but no one believed me. I found it on the road where the county had dredged from the ocean and used it for the road.

Industrial slag is also used on roads ...

http://www.meteoritesusa.com/fireball-reports/meteorwrongs/comment-page-1/

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Offline Bill S

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Re: Need help identifying this!
« Reply #4 on: 30/04/2014 23:17:57 »
Hi tkeener.  If I saw this lying on the beach in this area (East Anglia, UK), my first thought would be an oddly shaped flint.  Trying to scratch it with a knife or file might knock that idea on the head, as might hitting it with a hammer to see how it fractured.

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Offline kcviolet

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Re: Need help identifying this!
« Reply #5 on: 03/05/2014 16:19:26 »
I think this may be part of a fulgurite, made when electricity strikes the ground. There are beautiful fulgurites made when lightening strikes the beach, turning the sand to a glassy substance. My husband found some that were made when lightening downed an electrical wire. His had copper in them from the wire.

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Offline Snowball Solar System

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Re: Can you help me identifying this?
« Reply #6 on: 03/06/2016 20:12:19 »
My answer might depend on where you found it, was it on a beach in Wales, or thereabouts?  Is the bedrock of the area Silurian or older?

We have lots of similar material in the Appalachians, where much of it has metallic-iron inclusions, but the few similar type rocks I've seen from the UK seem to indicate an absence of native iron.

Do a Google search on "KBO meteorwrong", since no external links are allowed.
« Last Edit: 03/06/2016 20:27:07 by Snowball Solar System »

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Offline chris

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Re: What is this black, amorphous piece of rock?
« Reply #7 on: 03/06/2016 21:33:00 »
Thank you snowball, very insightful.
I never forget a face, but in your case I'll make an exception - Groucho Marx