Changes to iron ore blobs that are part of the trapezoid distribution:
- Size decreased from 9 to 8, meaning max ore blocks in a blob goes from 13 to 10
- Generation attempts decreased from 10 to 8
- Trapezoid distribution moved from Y=56 & Y=-24 to Y=32 & Y=-32
Changes to iron ore blobs that are of uniform distribution:
- Generation attempts decreased from 10 to 6
- Uniform distribution highest Y-level moved from Y=72 to Y=16
Changes to iron ore blobs that spawn in mountains:
- Ore blob size same as those of trapezoid distribution
- Generation attempts decreased from 90 to 60
This makes peak iron around Y=0, about where deepslate begins, and the amount of iron in mountains should be around half as much as before. The numbers I chose were an attempt to make iron have a similar rarity to redstone when underground, but at the elevation of lapis. Mountain iron had to be nerfed to keep it in balance with the undergroun iron.
Minecraft wiki links if you are confused as to what I'm talking about (especially with terminology):
