[Rockhounds] need help to identify these rocks

[Drew]

On Thu, Feb 19, 2009 at 4:52 AM, Andri <mustavidz at gmail.com> wrote:

> Greetings to all the experts in the board!
>
> I wish I could gather all detailed/technical info before posting this, but
> I'm not a geologist, so I dont know much about this specimen. I hope that
> is
> okay with the moderators. :) These rocks are taken as sample to what we
> believe is Fe (iron ore?), but the looks is abit unusual: black, shaped in
> chunks, weighing around 150gr,480gr, and 3kg for the biggest chunks. If you
> see the photos I attach here, you can see that the stones has some cavity
> (holes?) in it, and in some parts it glitters. These rocks were found in
> mountaineous location, and can be found both on the surface and beneath the
> ground.
>

Looks like slag to me... <http://en.wikipedia.org/wiki/Slag>

Drew


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