Chaidamuite
A variety of Minerals
What is Chaidamuite?
Chaidamuite is a rare zinc – iron sulfate mineral with chemical formula: ZnFe(SO4)2(OH)·4H2O. It was first described for an occurrence in the Xitieshan mine south of Mt. Qilianshan in the Chaidamu basin, Qinghai Province, China and was named for the locality. It occurs as an oxidation phase in a lead zinc deposit. In the type locality it is associated with the rare minerals: coquimbite, copiapite, butlerite and zincobotryogen. In addition to the Chinese occurrence it has been reported from the Getchell Mine in the Potosi District in Humboldt County, Nevada.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Chaidamuite 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.
Quick Facts
Physical Properties
- Color
- Brown to yellowish-brown
- Hardness (Mohs)
- 2.5 - 3
- Rock tumbling
- Not recommended
- Density
- 2.72 g/cm³
- Streak
- Pale yellow
Chemical Properties
- Chemical Formula
- ZnFe3+(SO4)2(OH) · 4H2O
- Elements
- Fe, H, O, S, Zn
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Chaidamuite FAQs
How do I identify Chaidamuite?
Chaidamuite can be identified by its hardness of 2.5 - 3 on the Mohs scale, Brown to yellowish-brown color. Look for these key characteristics when examining specimens.
What color is Chaidamuite?
Chaidamuite typically appears in Brown to yellowish-brown. Color can vary depending on impurities and formation conditions.
How hard is Chaidamuite?
Chaidamuite has a hardness of 2.5 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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