Scorpions use zinc and iron to fortify claws and stingers: Study

A study among 18 scorpion species revealed that metals such as zinc, iron, manganese and calcium fortify the animals' claws and stingers. It found that zinc is concentrated at the tip of stinger, while manganese becomes the predominant metal further down the length. Higher levels of zinc in the pincers usually meant lower levels in the stinger, and vice versa.