black stone

[pigeon]

hi all

I found the stones in a Roman ruin they are black they have an olive in taile they are gray and shiny.
I want to have an idea on what is stone?

thank you best time

p.

[WM6]

Did you test your stones with magnet?

[pigeon]

Did you test your stones with magnet?

hi wm6
I ' ve tested it with magnet after breaking one of them but it was not attracted with the magnet
thanks

[Noro]

for pigeon

hi wm6
I ' ve tested it with magnet after breaking one of them but it was not attracted with the magnet
thanks

in what area? mining or industrial? is fragile or hard?

[Freddy67]

One might have the impression that are slag, residues cooking of ceramic, tile or other.

[Noro]

One might have the impression that are slag, residues cooking of ceramic, tile or other.

http://ro.wikipedia.org/wiki/Blend%C4%83 maybe

[pigeon]

in what area? mining or industrial? is fragile or hard?

hi Nara

in roman ruines. it's heavy but it is easily broken when hit with a hammer. it's also so shiny inside
thank you best time

p.

[mikebg]

Pigeon, I think that the Romans used these black stones as fuel, although from your description these seem not as a coal.

[DOOLEY]

looks like lead ore to me , which as you say will be quite heavy for its size and non magnetic.
normaly found mixed / attatched to "floorspar" (think this is a local term) which is white in colour and quite hard.
poss been sepperated either naturaly or by man.
but going by the shapes of the pieces you have found i suspect it has been shaped by man , for what reason i'm not sure,
poss for decoration or jewelry purposes.

[Vague]

Looks a bit like hematite. Hematite is an iron ore but is not ferromagnetic. A bit in the top photo looks like kidney hematite. It was sometimes used for jewelry as well as being used for iron production. If you scrape a bit of it you should get a red streak if it is hematite