As far as i know, the respawn timer are IRL 6hrs for minerals, 2 hours for mobs and fruits/vegetables and no respawns for chest loot. But i need deep info into it, the timer is save based and count as time passes in game, or outside game? The reason of this question is: On my singleplayer world i mined the first mine im around 3 hrs of gameplay... then i played for 4 more hours after mining, and i leaved the game. When i joined again on singleplayer offline world got to check the mines and they regenratw all the copper. So the 6 hours time passed while offline?... but on an online server we played for 5 hours after mining, and upon return the mine didn't respawn, also mobs seens to respawn after restarting the game and playing offline world
#About resources respawn timers and world type
young lichen
lament prairie
If you go into the settings and enable the setting to show your FPS and whatnot, can't remember what it's called, the game is tracking I think ZULU or UTC time, so imagine it would Regen while offline as the game time would update when you fired up the world.
I have also noticed resources, more specifically the later tree types like divi divi trees and plaguewood trees respawn faster than the trees on my original island (start of game island). Haven't gotten exact numbers or anything or actually tracked it but that's what it seems.