What is this?? Silver metallic stone

[Mrn0025]

My brother works in a rail yard, where they cut, melt, and sort railroad pieces. Today he found this silver metallic porous rock. Anyone have any ideas what it is??

 

[vpnavy]

1st - I noticed this was your very first post - so, Welcome Aboard Mrn0025! You didn't list your state (or country) in your profile. So, you might consider jumping over to Sub-Forum: Select Your Area.... for information (i.e., clubs, hunts, finds, legends, maps, etc.) directly related to your state (or country). You might also consider adding your state (or country) to your displayed profile (SETTINGS -> EDIT PROFILE) - members may have more success helping you (your location may help, etc.)...

2nd - If no one can identify your find - you might consider posting your pictures on ROCKS/GEMS for more exposure...

 

[port ewen ace]

likely welding slag should be really light

 

[CASPER-2]

there is a rock forum
from pic - looks like coal or some sort of schist