Raw Metal Nuggets

I think it'd be great if there were raw nuggets of metal. This feature would fit very well as part of archaeology, as it'd probably make more sense for something like that to provide nuggets rather than full chunks of metal. It would also balance Nether Gold Ore, as it'd no longer provide you with pre-smelted metal. The nuggets could optionally be smeltable in about 1/8th of the time it'd usually take to smelt a regular ingot.

If you wanted to go the extra mile, you could also add in shards of diamond and emerald. I feel like it'd be super fun if getting diamonds from archaeology was possible, but definitely not a full gem at once. Getting pieces of a diamond would incentivize people to seek out more dig sites.