/r/itsslag
Meteorite? Obsidian? It's slag ಠ_ಠ
Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore. Slag is usually a mixture of metal oxides and silicon dioxide. However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of the smelting, and minimizing any re-oxidation of the final liquid metal product before the molten metal is removed from the furnace and used to make solid metal.
Slag Glass from the Glass Encyclopedia
Iron oxide nodules (not slag)
Limonite (not slag)
Tektite (not slag)
Indochinite(not slag)
Ferrochrome (not slag)
Anthracite(not slag)
Bitumen (not slag)
Cuprite (not slag)
Flint (white crust) (not slag)
/r/itsslag
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Glass Slag from Elizabeth's Furnace in VA
I don't know how to work this stuff. Does slag tumble well?
19:10 UTC
Whats is this? Metal detector overloaded.
15:54 UTC
What it this?
Was at an estate sale about to walk back to my car when I thought to look through the flower bed. I found 1 giant rose rock formation and 2 what I believe to be glass. Can yall help me?
18:41 UTC
Meteroite or slag?
20:44 UTC
Well is it slag? I find alot of slag in my area but never so smooth.
22:28 UTC
I work in excavations and we came across some treasure today!
Active user over at bottle digging and was referred here for more info 🤗
Is it worth it to continue collecting these? I have 350sq ft more of this area to dig this week so there will be tons more. Two of my co workers also brought home the same amount shown here.
A Google lens search tells me these are worth a ton of money? Is it too good to be true?
Thank you!
03:55 UTC
Slag found in my garden
I gave a “rock I found” in the soil back in the woods of my property a good scrub… and learned this is pretty slag! That soil back there always has huge white quartz I like to kick around for & found this instead.
I live in a town historically known for manufacturing jewelry in the 18th & 19th centuries. Could this be a byproduct?
R/minerals helped me ID & I’m pretty proud of the find!
12:00 UTC
Found this slag when I was a kid
It’s not as dense/hard as glass but not easily scratched, maybe resin or enamel. I called it lava back then haha
16:24 UTC
Asked in r/whatsthisrock was told it looks like slag. What is it?
09:44 UTC