Iyoite
A variety of Atacamite Group
What is Iyoite?
Iyoite is a very rare manganese copper chloride hydroxide mineral with the formula MnCuCl(OH)3. Iyoite is a new member of the atacamite group, and it an analogue of botallackite characterized in manganese and copper ordering. Iyoite is monoclinic (space group P21/m). It is chemically similar to misakiite. Both minerals come from the Ohku mine in the Ehime prefecture, Japan.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Iyoite 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.
Iyoite Localities Map
See where Iyoite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Pale green
- Density
- 3.22 g/cm³
Chemical Properties
- Chemical Formula
- MnCuCl(OH)3
- Elements
- Cl, Cu, H, Mn, O
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Iyoite FAQs
How do I identify Iyoite?
Iyoite can be identified by its Pale green color. Look for these key characteristics when examining specimens.
What color is Iyoite?
Iyoite typically appears in Pale green. Color can vary depending on impurities and formation conditions.
