After achieving high over 99 mining I have been able to determine that mining experience is quite fast. Such a great useful skill should be much harder in order to achieve. Especially considering runite rocks will be quite valuable, only a limited amount of dedicated players should have access to the.
The following is an appropriate experience table for mining ores:
Runite ores: 2000 Exp
addy ore:
mith ore:
coal:
iron ore:
tin ore:
copper ore: