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(Text) CC BY-SA