title: Changoite
text: # Changoite
  
  Changoite is a rare zinc sulfate mineral with the formula $Na_2Zn(SO_4)_2·4H_2O.$ Chagoite was discovered in the San Francisco Mine near Sierra Gorda, Antofagasta, Chile. The mineral is a zinc-analogue of blödite, cobaltoblödite, manganoblödite and nickelblödite - other representatives of the blödite group. In terms of chemistry changoite is somewhat similar to gordaite. The mineral's name comes from the early inhabitants of Chile - Changos.
  
  Traces of magnesium and calcium in changoite are negligible.
  
  Minerals associating with changoite are gypsum, zinc-bearing paratacamite, and thénardite.
  
  