Suvarna Garge (Editor)

Changoite

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Category
  
Sulfate mineral

Crystal system
  
Monoclinic

Formula(repeating unit)
  
Na2Zn(SO4)2•4H2O

Space group
  
P21/a

Strunz classification
  
7.CC.50 (10 ed)6/C.18-25 (8 ed)

Crystal class
  
Prismatic (2/m)(same H-M symbol)

Changoite is a rare nickel mineral with the formula Na2Zn(SO4)2•4H2O. Chagoite was discovered in 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. Mineral's name comes from the early inhabitants of Chile - Changos.

Association and origin

Minerals associating with changoite are gypsum, zinc-bearing paratacamite, and thénardite.

References

Changoite Wikipedia


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