Here's a quick summary on the various ore eles:
Regular Earth elementals: With the changes to Shame, most easily found in the south reaches of Compassion desert, The Ratman mines of Ilshenar (west of Sacrifice gate, then turn south inside the mines - going too far into the mines leads to the Skeletal Wyrm cave), and a few less pleasant places. Great for combat training and level 1 maps (all ore elementals are level 1 map carriers). Carry 2 small iron ore.
Dull Copper Elementals: Only occur as natural spawn, not from the Gargoyle's Pickaxes. Easiest spawn location is the SW corner (south of t
he shrine) in the Compassion Desert, though also found in a couple other dungeons (the Sorceror's Dungeon in Ilshenar is the biggest challenge). Loot includes 2 large DC ore. This is the other elemental impacted by the Shame changes. Originally bugged to only by affected by Elemental (super) Slayers, was fixed to be under Earth Elemental Slayer several years ago - IF that fix didn't get accidentally nerfed along the way.
Shadow Iron Elementals: Only found naturally in Yomotsu Mines, Tokuno. Most common elemental brought up by GPA (especially when used in conjunction with a prospector's tool). Loot is 25 Shadow ore (and all elementals greater have 25 ore each as well). Are a pushover to a weapons user with an earth elemental slayer. My Miner once got 5 shadow Iron Elementals in 9 swings and killed them all, autodefending, without stopping my mine swing macro.
Copper Elementals: The damage reflect means you want to have as good a resist suit as possible, and start bandaging as soon as you're
hit. Their low resist and wrestling means that it's even easier to kill yourself with reflected damage than with valorite elementals, though with sufficient parry and DCI, if you're over 100 HP, you can probably kill one before you kill yourself (in combination with its attacks). If you must use a slayer, only getting double damage from an Elemental slayer is preferable to triple suicide damage from an Earth Elemental minor slayer.
Bronze Elemental: Have a ranged gas attack, but otherwise drop quickly.
Gold & Agapite elementals: Have much higher stats than most of the other elemental. One is the second toughest, the other is the Second strongest. These two (and Verite) are the ones you want to use a slayer on the most.
Verite Elementals: Have a chance to outright destroy items that aren't insured/blessed/cursed. Circumstantial evidence seems t
o indicate that the gloves are targeted more frequently. Otherwise, weaker than earlier elementals.
Valorite Elementals: Have all the earlier elementals' specials (including superior resists and strength), combined into one nasty package. On the bright side, its higher Wrestling and resists make it less likely you'll kill yourself with a reflected attack, but you'll still probably have to heal at least once during the fight to keep f
rom killing yourself. Carries 2 pairs of gems, inste
ad of 1 pair, along with its ore, and appears to have a slightly larger assortment of crappy loot to go with the gems and ore.
