I see you’re a donator, the donator zone in my opinion has plenty of adamantite ore. Never very crowded usually just runite ore is crowded from time to time at the donator zone.
To clearify what the 2 guys above said: there are 2 donator zones: the old one and the new one. (::Dz and ::dz2)
Hope this helps, should be enough addy ores there :)