Changoite
A variety of Minerals
What is Changoite?
Changoite is a rare zinc sulfate mineral with the formula Na2Zn(SO4)2·4H2O. 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.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Changoite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Changoite Localities Map
See where Changoite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Colorless
- Hardness (Mohs)
- 2 - 3
- Density
- 2.507 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Na2Zn(SO4)2 · 4H2O
- Elements
- H, Na, O, S, Zn
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Changoite FAQs
How do I identify Changoite?
Changoite can be identified by its hardness of 2 - 3 on the Mohs scale, Colorless color. Look for these key characteristics when examining specimens.
What color is Changoite?
Changoite typically appears in Colorless. Color can vary depending on impurities and formation conditions.
How hard is Changoite?
Changoite has a hardness of 2 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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