Additional ores from prospecting can be placed using better builders wands allowing for infinite ore duplication.

Looking at how Better Builder's Wands handles block placement, I'm not sure how I can remedy this on my own end, if I could.

im noticing this with the cyclic builder, it can place the "cannot place ore" and then when broken you can get both cannot place and normal ore (this is noticed even more with a pick with higher looting like apotheosis)