Wiktionary
changoite
n. (context mineral English) A monoclinic-prismatic colorless mineral containing hydrogen, oxygen, sodium, sulfur, and zinc.
Wikipedia
Changoite
Changoite is a rare nickel mineral with the formula NaZn(SO)•4HO. 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.