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.

Applies to all rocks & minerals.

Quick Facts

Physical Properties

Color
Dark brown to black
Hardness (Mohs)
4.5
Rock tumbling
Not recommended
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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