Brassy egg

Mar 2, 2016
43
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Hi,
Please help me identify this. Found it on sand in Maine USA washed up from the ocean with a few thousand other rocks. I comb this beach daily for 5 years picking up trash and never saw anything like it:


Brassy metallic color
Tried it on strong magnet but no magnetic pull
Worn smooth w pitting
Dense, very heavy
Can't scratch it w a knife or scissors
Doesn't scratch a glass bottle
Rubbed it on porcelain and first rubbed dark; then nothing
Gives off odd smell like old fireworks or gun barrel when rubbed with fingers or on porcelain
Egg shaped (*many many other rocks on the beach are egg-shaped)

Have you ever seen anything like it? 20160301_170205.jpg 20160301_150915.jpg 20160304_121234.jpg 20160304_113137.jpg
 

digger460

Silver Member
Sep 19, 2015
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That's a head scratcher:icon_scratch:. No rock expert here, but if it's as heavy and you can't scratch it, I wouldn't think that wave action would cause the roundness and smoothness. Can't wait till the experts chime in to find out what it is. Cool find!
 

Salvor6

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Feb 5, 2005
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Port Richey, Florida
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Looks like a meteorite. Could be nickel.
 

Jolly Mon

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Sep 3, 2012
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It looks like a worn river rock. It could have gotten deposited near shore as part of a ship's ballast. Then again it could have gotten there naturally. If I found a rock like that in South Carolina, I would bet ballast. In Maine maybe not so much...isn't Maine's coast Rocky ?
 

OP
OP
Maine USA Beachcomber
Mar 2, 2016
43
14
Primary Interest:
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It looks like a worn river rock. It could have gotten deposited near shore as part of a ship's ballast. Then again it could have gotten there naturally. If I found a rock like that in South Carolina, I would bet ballast. In Maine maybe not so much...isn't Maine's coast Rocky ?

It's very rocky, but not with gold/brass-colored rocks. The color and hardness and odor are puzzling. What kind of ballast?
 

seekerGH

Hero Member
Jan 25, 2016
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Copper sulphide?

Did you run a density calculation?

Edit:
Looks like a meteorite. Could be nickel.
Most meteorites are iron and nickel and would react to the magnet.
 

Last edited:

Jolly Mon

Hero Member
Sep 3, 2012
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Sorry, I missed your statement in the OP about there being many egg shaped rocks on the beach in question. Since this is the case, the rock is probably not ballast. Maybe Salvor6 is correct and it is a meteorite.
 

seekerGH

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Jan 25, 2016
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That seems to be valid.

Specific gravity will always get you very close.
 

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