Where can you find mithril or glass armour in the elder scrolls oblivion

Mithril only becomes available when your player has reached level 10, and glass at level 20. Once you have reached these levels, your best bet is to search for bandits in the wilderness, who often wear this armour.
ALSO during Quests tough enemys can have it


once you reach around level 18-20 go to rockmilk cavern for a lot of mithril and dwarven. for glass and even daedric go to roxey inn north of imperial city and kill people inside for it