we've recently added Nuclearcraft to the MMD Public Server pack and even though a reset of Aroma's Mining Dimension was done, ive discorerd after quarrying 70+ chunks that neither Boron or Lithium have been generated in that dimension even though it is whitelisted, is this something on this mods end or Aroma's mod end ?

Are the ores generating in your overworld correctly? If so, I'm very confused as to why they are generating there, but not the mining world...

Yes, i went to a distance where i know hasnt been loaded yet an i was getting the ores aok in overworld, which is what had me confused as well to why they where working overworld and no tin mining dimension. I havent tested out DeepDark as yet either, to see if its spawning there

Hmm, should be working - works in FTB Revelation, after all. How about the other NC ores?

Im not sure on the others tbh as we have another mod providing them, but certainly the Beryllium, Sulfur, Rhodochrosite & Fluorite are present ... this is teh config look see for what we have....

ores {
# List of IDs of dimensions to whitelist/blacklist for ore generation.
I:ore_dims <
0
6
-11325
-9999
-100
>

# Is the dimension list a whitelist (false) or a blacklist (true)?
B:ore_dims_list_type=false

# Will ores generate in the world? Order: copper, tin, lead, thorium, uranium, boron, lithium, magnesium.
B:ore_gen <
    false
    false
    false
    false
    false
    true
    true
    false
 >

What is the mining dimension's ID?

6

The mining dimension is -6 not 6
You can clearly see it in the configs for Aroma1997's Mining Dimension.

As stated above, this is a simple fix of changing a positive number to a negative number. Aroma's mining dimension generates by default in a folder called DIM-6, which stands for "dimension negative six". I'm surprised this wasn't picked up sooner...

Ah, ok - sorta my bad then, I must've misread it when setting up the default configs. Cheers!