Potassium magnesium sulfate
# Potassium magnesium sulfate

Potassium magnesium sulfate is a double salt that can crystallise in a number of forms that occur as minerals.

* Langbeinite $K_2Mg_2(SO_4)_3$
* Leonite $K_2Mg(SO_4)_2·4H_2O$
* Picromerite $K_2Mg(SO_4)_2·6H_2O$
