I'm playing the direwolf20 modpack with the addition of emasher's core and engineer's toolbox with the universal config, and I'm finding tons of the copper of emasher's, mostly because it spawns in huge veins. I've checked the config of emasher's with the latest universal config file of emasher's, and the config says:
Code:
B:"D: Generate Native Copper Ore"=true
I:"E: Native Copper Ore Per Chunk"=12
I:"F: Native Copper Ore Per Vein"=16
I:"G: Native Copper Ore Min Height"=32
I:"H: Native Copper Ore Max Height"=127
S:"I: Native Copper Ore Biomes"=
and I've found the native copper, lots and lots of it
EDIT: just found out that the Cassiterite ore from emasher's core is actually tin when you smelt it, and just like the native copper ore, it spawns quite often and in huge veins. I mined 2 veins of it that were only 10 blocks apart from eachother and I collected more then 1,5 stacks of the Cassiterite ore... the other ores can also be used for ingots, like nickel, lead and aluminium