Ores

Ores are mineable blocks that spawn in certain Locations. Unlike vanilla Minecraft, ores cannot be found in most of the world. Otherwise, the ores themselves behave as expected. Many higher level ores are inaccessible via mining until you reach the Deep Caverns.

Like vanilla Minecraft, iron and gold ore drop the ore block when mined, while others drop the finished product, although Silk Touch can be used to obtain the ore if desired. Unlike vanilla Minecraft, Skyblock Pickaxes can have a Smelting Touch enchantment that will smelt iron and gold ore when it is mined. (or if using a minion an Auto Smelter can be used).

With the addition of the Dwarven Mines ores now require. Coal and lapis need break power 1, Iron and lapis need break power 2, Diamond and Mithril need break power 4, Titanium needs break power 5, which is the current limit

List
Note: For the listed result, gold and iron require you to use Smelting Touch / an Auto Smelter as explained above.

Most rare ores (in vanilla Minecraft) are found in the Deep Caverns.