Wyllieite
A variety of Minerals
What is Wyllieite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Wyllieite 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.
Wyllieite Localities Map
See where Wyllieite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- deep bluish-green to deep oily-green, gray-green, to greenish-black
- Hardness (Mohs)
- 4 - 4.5
- Streak
- dirty olive green
Chemical Properties
- Chemical Formula
- (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3
- Elements
- Al, Ca, Mn, Na, O, P
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Wyllieite FAQs
How do I identify Wyllieite?
Wyllieite can be identified by its hardness of 4 - 4.5 on the Mohs scale, deep bluish-green to deep oily-green color. Look for these key characteristics when examining specimens.
What color is Wyllieite?
Wyllieite typically appears in deep bluish-green to deep oily-green, gray-green, to greenish-black. Color can vary depending on impurities and formation conditions.
How hard is Wyllieite?
Wyllieite has a hardness of 4 - 4.5 on the Mohs scale. This gives it moderate hardness.
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