Woodruffite
A variety of Minerals
What is Woodruffite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Woodruffite 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.
Woodruffite Localities Map
See where Woodruffite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Dark brown to black
- Hardness (Mohs)
- 4.5
- Density
- 3.983 g/cm³
- Streak
- Dark brown
Chemical Properties
- Chemical Formula
- Zn2+x/2(Mn4+1-xMn3+x)O2·yH2O x ~ 0.4 and y ~ 0.7
- Elements
- H, Mn, O, Zn
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Woodruffite FAQs
How do I identify Woodruffite?
Woodruffite can be identified by its hardness of 4.5 on the Mohs scale, Dark brown to black color. Look for these key characteristics when examining specimens.
What color is Woodruffite?
Woodruffite typically appears in Dark brown to black. Color can vary depending on impurities and formation conditions.
How hard is Woodruffite?
Woodruffite has a hardness of 4.5 on the Mohs scale. This gives it moderate hardness.
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