Again, dind't say it was definately a 69 mob.. I said 69-ish. They list as being 68-70. It could have been the odd 70 pop, who knows. But I did get one off wivre. I've also gotten avatarites off of mobs in Ru'anne Gardens as well (the normal mobs go up to 78/79). The point is it does not appear to be a hard/fast rule of being 80+ for them to drop.

As for spending one game week and not getting an avatarite at all, that's actually a common problem with them. Could have been an issue with moon phase or season or who knows what. I solo skillups in abyssea, help out with oddball trials, farming, etc--spend a few hours each day in there and can go almost a whole week and not see a single avatarite....geodes, but no avatarite. Chaulk that up to the randomness of the loot system.