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 not accessible via mining until you reach the Deep Caverns.

Like vanilla Minecraft, iron and gold ore drop the actual ore block when mined, while others drop an item, although Silk Touch can be used to obtain the actual ore if desired. However unlike vanilla Minecraft Pickaxes can have a Smelting Touch enchantment that will have iron and gold ores drop ingots instead of ore when mined (or if using a minion an Auto Smelter can be used).

With the latest mining update, ores now require breaking power. 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.