Ores

Shadowmetal
This can be found in the shadowlands dimension, it can be smelted into ingots which can be made into blocks or enhanced (which makes it glow) enhanced shadometal is used to craft shadowmetal tools and armor, as well as being used in several other crafting recipies

Minimum pickaxe level to mine: iron

generation hight: Y level 0 to Y level 255

Red gem
This can be found in the shadowlands dimension, it drops 1 red gem when mined, which can be crafted with Shadowmetal ingots to make shadowgem ingots which are used to make swords and armor.

Minimum pickaxe level to mine: diamond

generation hight: Y level 0 to Y level 255

Green gem
This can be found in the shadowlands dimension, it drops 1 green gem when mined, which can be crafted with emeralds to make emeraldium ingots which are used to make swords and armor.

Minimum pickaxe level to mine: iron

generation hight: Y level 0 to Y level 255

Blue gem
This can be found in the Glowshroom Forest, it drops 1 blue gem when mined, which can be used on a blue gem conversion table to convert the gems into XP

Minimum pickaxe level to mine: diamond

generation hight: Y level 1 to Y level 64

Ghostmetal
This can be found in the Glowshroom Forest, it can be smelted into ingots which can be used to make armor and tools, there is no Ghostmetal block because dreamCritting forgot to add one and didn't think there was much point adding one anyway.

Minimum pickaxe level to mine: diamond

generation hight: Y level 1 to Y level 64

Fire gem
This can be found in the Forgotten Desert and Bloodlust, it drops 1 fire gem when mined, which can be crafted with blaze powder to make Firegem ingots which can be used to craft armor and weapons.

Minimum pickaxe level to mine: diamond

generation hight: Y level 1 to Y level 32 in Forgotten Desert or Y level 2 to Y level 15 in Bloodlust

Vellite
This can be found in the Vellium dimension, it drops 1 neon gem when mined, which can be used in crafting armor and Vellium Megabee summoners.

Minimum pickaxe level to mine: diamond

generation hight: Y level 32 to Y level 128

Dimension specific Overworld ores
These are versions of Overworld ores which generate in the modded dimensions. It should be easy to see what each one is.

Shadowlands diamond ore is not shown in the picture here.

Goo ore
This can be found in the Vellium dimension, it can be smelted into slime or can be made into blocks. It is also used in making a Goo blade.

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Brutallium
This can be found in the Vellium dimension, it can be smelted into ingots which can be made into blocks and display stands or crafted into plates which can be used in making a Brutallium Robotic Accomplice which will attack hostile mobs.

Minimum pickaxe level to mine: diamond

generation hight: Y level 5 to Y level 50

Belronite
This can be found in the Glowshroom Forest, it can be smelted into ingots which can be used to make blast protection 5 armor, tools and megaswords

Minimum pickaxe level to mine: diamond

generation hight: Y level 1 to Y level 45

Green shard
This can be found in the Glowshroom Forest, it can be mined to drop 30 XP

Minimum pickaxe level to mine: iron

generation hight: Y level 1 to Y level 64

Sparklepolian diamond
This can be found in the Sparkpolia dimension at the bottom of lakes. It is used to craft Enhanced diamond armor and Guardian Bane swords

Minimum pickaxe level to mine: diamond

generation hight: Y level 20 to Y level 55 (only in darkshroom stone)

Cyprendium
This can be found in the Sparkpolia dimension in the mountains and underground. It is used to craft Creeper Alloy and Cyprendium swords

Minimum pickaxe level to mine: diamond

generation hight: Y level 1 to Y level 128