Silver Rock?

[Nana40]

What is it?
My daughter bought a house a couple of years ago. I saw two rocks in the flower garden the day she was moving in. Bright silver. I assumed they must have been painted rocks. I can remember years ago that some of the older folks would spray paint rocks to add a little something to their flower gardens, so I assumed this must be the case with these two rocks...... Not the case. Today I was at Shannon's noticed the rocks again and asked her about them. She didn't know either. We talked a bit about it and being curious I said maybe we should see if they were silver painted or silver all the way through. So she picked one up and tossed it onto the cement drive. It chipped a bit and it's silver all the way through. What is it?

Thanks!
Nana

 

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[Eu_citzen]

I'll go with Moon rock!

Naaa Greenie...no rock shops around here!

Thanks for the help though...

Nana

jewellery shops then? Maybe they can help..

 

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[Skrimpy]

I say find a metalergist or engineer working for an aeronautical contractor or something. They should have a test to find out what the heck it is. Maybe a geologist at a local University.

 

[rockbuster]

My guess is raw Silicon. I have many of these nuggets. But to be sure, is the stone heavy or really light.

 

[Nana40]

MMMMM...really neither. Nothing unusual about the weight, I don't think.

My guess is raw Silicon. I have many of these nuggets. But to be sure, is the stone heavy or really light.

Thanks ya'll!

Nana

 

[newbieprospector]

thought I would post this here also, since the readers here may not have seen the other post
http://www.search.com/reference/Anthracite_coal

 

[Wetgreenie]

thought I would post this here also, since the readers here may not have seen the other post
http://www.search.com/reference/Anthracite_coal

Looks to me this would not be it....Too dark

 

[justine093]

Galena will streak test gray.
galena should not scratch glass, but may scratch a penny
(they are about the same hardness.)
the distinguisher is that galena is a little heavier than a normal rock.
(high metal content will make it heavy)

 

[newbieprospector]

thought I would post this here also, since the readers here may not have seen the other post
http://www.search.com/reference/Anthracite_coal

Looks to me this would not be it....Too dark

Weathered samples of anthracite are not dark, they look like foil wrapped baked potatoes Take a small piece and see if you can light it with a butane torch...if it burns blue...it's anthracite

 

[Monty]

I wish I knew. I found one similar long ago and posted it, but never did find out what it was. Mine looked very similar except it was really heavy and hard and had a small crystalline structure when fiewed up close. I guess Magnesium? Monty

 

[Waco Kid]

So help me, every one of these photos (except the one of the penny) looks like a ham wrapped in aluminum foil. Or maybe I've delayed lunch too long.

 

[hasbeen]

Maybe Pyrolucite,an ore of Manganese mined in Batesville,Ark.

http://www.mii.org/Minerals/photopyrolusite.html

hasbeen

 

[Eu_citzen]

You mean pyrolusite?
http://webmineral.com/data/Pyrolusite.shtml

The link you provided did not work for me.

 

[hasbeen]

Pyrolusite was what I meant.The wife was in a hurry to leave for work so I'll blame her for the misspelling.

hasbeen

 

[re-tek]

i'd find the local science museum and take it to the resident rock and mineral guru. if its a meteorite, its worth money. if its silicone, its nerd cool. if its manganese it may be worth some money to a rock collector. i remember reading about al these efforts to mine manganese from the ocean floor. if they are willing to go through all that trouble the stuff must have some value.

 

[aaaaaaa]

Not a meteorite. Could be silicon.
See http://meteorites.wustl.edu/meteorwrongs/m027.htm

 

[Eu_citzen]

Pyrolusite was what I meant.The wife was in a hurry to leave for work so I'll blame her for the misspelling.

hasbeen

 

[BioProfessor]

If it were Osmium, you'd already be dead.

 

[leddel]

i have found very similar rocks here in Connecticut and they give off a foil type signal and the general consensus was a natural lead graphite