Winterspring--
The lvl 57-60 tiger area on the north end spawns 3 rich thorium ever 14.5 min starting from left, then north, then right side.
Yetti cave east of everlook spawns 2 Rich thorium veins that spawn ever 28.2 min one at the very end of the cave, one on the ramp up left side.
Thistlelfur Village on the north east side of winterspring has 3 mines that spawn ever 34 min. Left of the gate going in one on the north up the hill and one on the south east at the dead end.
Owlbeast hill southeast side of winterspring near the valley of giants, 29.2 min 2 rich thorium spawns. one in the cave on the left of the owls, one up the hill in the cave on the right
Ungoro --
West side near the lvl 55-56 elite dino at the west pylon not sure of spawn time.
Fire hill in the center of ungoro there are 5 potential spawn points best thing to do there is run up the hill check mini. no spawn run down. no need it walking around it as the mini can cover the whole hill in 2 sec
Silthius --
Misc thorium all over the zone. one of the best mining spots for thorium ore in general there is (imo). Rich thorium on all 4 points of the zone north,south,east,west look at the map once in the zone and hit the 4 center points of each direction 59 min spawn for each mine.
Also if you are a rogue or have a couple buds with you there is ALWAYS 2-3 rich thorium down in the individual insect areas monster lvls ranging from 55-62 elite. (i take a preist and a rogue with me and hit all 4 areas)
East Plague --
East plague has 3 that i know of. respawn is random in this area. 1 is in the cavern just south of light hope chapel. One spawns up the hill north of Light hope in the cauldren area (not sure the name dont care just there for the ore). One spawns North west of light hope near Zul Mashaar just check the general area as this mine jumps a bit.
Copper Veins
• Alliance: Elwynn Forest, Dun Morogh, Loch Modan
• Horde: The Barrens, Durotar, Westfall
Tin Veins
• Alliance: Duskwood, Redridge Mountains, Loch Modan
• Horde: The Barrens, Thousand Needles
• Neutral: Hillsbrad Foothills
Silver Veins
• Alliance: Duskwood
• Horde: Thousand Needles, The Barrens
• Neutral: Arathi Highlands, Hillsbrad Foothills
Iron Deposits
• Neutral: Arathi Highlands, Badlands, Stranglethorn Vale, Alterac Mountains, Thousand Needles
Mithril Deposits
• Neutral: Badlands, Tanaris (Alien Caves), Desolace, Searing Gorge
Gold Veins
• Neutral: Badlands, Arathi Highlands, Burning Steppes, Stranglethorn Vale
Truesilver Veins
• Neutral: Burning Steppes, Un'Goro Crater (Ape Caves), Badlands, Tanaris (Alien Caves)
Small Thorium Veins
• Neutral: Un'Goro Crater (Alien Caves), Burning Steppes, Blasted Lands, Felwood
Rich Thorium Veins
• Neutral: Burning Steppes, Eastern Plaguelands, Un'Goro Crater (Western Part), Winterspring
Dark Iron Deposit
• Neutral: Blackrock Depths, Molten Core