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What is this?

+1 vote
Please help me identify this. I don't see a toolbar to attach an image -please help.

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
Density test said about a 6
Can't scratch it w a knife, scissors
Doesn't scratch a glass bottle
Rubbed it on porcelain and first rubbed dark; then nothing
Gives off odd smell like old fireworks when rubbed with fingers
Egg shaped (*many other rocks on the beach are egg-shaped)
asked Mar 8, 2016 by Beachy (130 points)

1 Answer

0 votes
If it smells like firecrackers, I am thinking a sulphurous origin.


If you hit answer to your own post here I know the tool bars appear. The bottom tool bar, the sixth box, the first icon should give you three ways to post a picture.


If you hit ask a question the box below the question line, same directions.
answered Mar 14, 2016 by Weasel (52,070 points)

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