Weathered Copper
minecraft:weathered_copperWeathered copper is the third of four oxidation stages of a block of copper, appearing mostly green with brown spotting. It is a compact storage block equivalent to nine copper ingots, and it continues to naturally oxidize into the fully oxidized stage unless waxed with honeycomb. It can also be cut, stonecut into slabs and stairs, or scraped back a stage with an axe.
FAQ
How do I get weathered copper?
Craft a block of copper from nine ingots and let it oxidize naturally over time, or scrape an oxidized block with an axe to bring it back one stage to weathered.
Can I stop it from oxidizing further?
Yes. Applying honeycomb waxes the block, permanently locking it at the weathered stage so it never reaches fully oxidized.
Can I turn it back into copper ingots?
No. Only the unoxidized, unwaxed block of copper can be crafted back into ingots; weathered copper is decorative only at that point.
How do I reverse the oxidation?
Right-click the block with an axe to scrape off one stage of oxidation, or strike it with lightning to fully deoxidize it.