Slate

[Questions?]

does anyone now how to prepare slate? (w/o boiling)
can you do the same as rocks and wash it with some hot water and scrub it really well?

 

[fluttermoth]

Yes; a good scrub in hot water; slate is rock, after all! Do make sure it doesn't have any metallic veins in it; some slate does.

 

[Questions?]

what would metallic metal look like?