Either annealed or tempered lode prills can be heated to form glowing lode prills.
A stack of 3 or more glowing lode prills placed on a tempered lode block (serving as an anvil) can be pummeled with a mallet until it forms a lode mallet head. Continued pummeling will cycle through tool heads in the same order as with wood, tossing out glowing lode prills as needed. The spade and hatchet heads cost 2 prills, and the pick head costs 1 prill. The head itself can then be tempered just like the prills.