Modpack version:
Enigmatica6 0.5.9

Bug Description:
Apatite is listed as smeltable in tinkers smeltery, however it's melt temperature exceeds the temperature of blazing blood/blazing honey. Apatite has a melt temperature of 1660, however blazing blood is at 1500. For such a commonplace material, it's weird for it to be harder to melt than diamond.

That melting point is correct though 😅

Fixed in-dev, thanks for letting us know!