Special thanks to Picho, info taken from Nodiatis forum.
To mine, you first need a Mining Hammer.
These are sold in T2 (Stronhad) for 1200 gold. Once you have that in your inventory you need to go find an area in which you can mine. I believe that anywhere with a mountain in the background during combat will work, need someone to verify this, though.
Anyway. Once you are in a suitable location, you must successfully defeat a monster - anything will do, even greys. After you beat it and exit looting, the mining icon will appear at the bottom of the screen. Click it to enter the mining mini-game. Put your mouse over the giant rock that appears and hit spacebar to throw a hammer at it. It will break up, and you have to throw hammers at the pieces that appear.
Lather, rinse, repeat, and you will get either an ore or a worthless rock. I have only had rocks appear while mining at Troll Bridge, though.
If you have a Stone Saw (sold in T4, Atlimus) you can turn the ore into geodes.
Otherwise you need sticks to turn the ore into ingots.
|Mining||Mining||Level Required to Process||Ignots|
|Citrine Ore||Citrine Geode||0||Citrine Ingots|
|Liliac Ore||Liliac Geode||3||Liliac Ingots|
|Coal Ore||Coal Geode||6||Coal Ingots|
|Quartz Ore||Quartz Geode||10||Quartz Ingots|
|Jonquil Ore||Jonquil Geode||13||Jonquil Ingots|
|Capri Ore||Capri Geode||17||Capri Ingots|
|Spotted Tabac Ore||Spotted Tabac Geode||20||Spotted Tabac Ingots|
|Apetite Ore||Apetite Geode||24||Apetite Ingots|
|Amethyst Ore||Amethyst Geode||27||Amethyst Ingots|
|Amazonite Ore||Amazonite Geode||30||Amazonite Ingots|
|Aquamarine Ore||Aquamarine Geode||Aquamarine Ingots|
|Coral Ore||Coral Geode||Coral Ingots|
|Lace Agate Ore||Lace Agate Geode||Lace Agate Ingots|
|Emerald Ore||Emerald Geode||Emerald Ingots|
|Firestone Ore||Firestone Geode||Firestone Ingots|
|Boreale Ore||BGeodeale Geode||BIngotsale Ingots|
|Volcano Ore||Volcano Geode||Volcano Ingots|
|Calcite Hive Ore||Calcite Hive Geode||Calcite Hive Ingots|
|Onyx Ore||Onyx Geode||Onyx Ingots|
|Chrysolite Ore||Chrysolite Geode||Chrysolite Ingots|
|Crystal Ore||Crystal Geode||Crystal Ingots|
|Erinite Ore||Erinite Geode||Erinite Ingots|
|Aquadepths Ore||Aquadepths Geode||Aquadepths Ingots|
|Diamond Ore||Diamond Geode||Diamond Ingots|
|Aurum Ore||Aurum Geode||Aurum Ingots|
|Nepherite Ore||Nepherite Geode||Nepherite Ingots|
|Labradorite Ore||Labradorite Geode||Labradorite Ingots|
|Suzulite Ore||Suzulite Geode||Suzulite Ingots|
|Temorite Ore||Temorite Geode||Temorite Ingots|
|Livmalign Ore||Livmalign Geode||Livmalign Ingots|