On 8/8/2012 2:23 PM, Allison Maricelli-Loukanis wrote:
Does slag look like this? I have seen some examples of slag and it was formless.
Thursday, August 9, 2012
Re: [Geology2] very interesting mystery rock
It depends on the metal and how the slag was handled. If it is dumped into water while hot, it will tend to crumble and be easy to grind into sand/gravel for making concrete. That is where most slag ends up. If it has a chance to cool more slowly, it can form an egg shape or ooze. Non-ferrous smelting often produces mostly iron silicate in the slag, which makes it fairly dense. That is what we have here. Ferrous smelting tends to remove all the iron, and the slag contains everything else. Iron silicate can resemble an iron-nickel meteorite on the outside but is very different when cut and polished.
Chuck
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