== Skill and difficulty ==
Different ore veins have different difficulty. The easiest is mining plain rock, followed by [[iron ore vein]]s and [[copper orevein]]s. The hardest are silver and gold. As with most things in Wurm, too low difficulty leads to reduced skillgainskill gain, while too high difficulty results in high failure rate. A failure results in a 1.00 QL rock or ore.
Items from successful mining have random QL, but the maximum possible is the lower of your mining skill and the tile's inherent quality. See [[prospecting]] for details about tile QL.
* Rock: 1-50
* [[Ironvein]]: 50-60* [[Coppervein]]: 60-70* [[Tin vein]] or [[leadvein]]: 70-85* [[Silvervein]]: 90-99
For the best skill gain, you will want to fail to mine the ore sometimes; about 10-15 failures (1QL) is the best skill gain. If you fail more, improve your [[pickaxe ]] or downgrade an ore difficulty.
''Note: Never mine gold for skill; it is a waste of materials and time. You have less than the optimal skill gain % chance to get ore-QL > 1/2 skill.''