Ferroalluaudite
A variety of Alluaudite Group
What is Ferroalluaudite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Ferroalluaudite 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.
Ferroalluaudite Localities Map
See where Ferroalluaudite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Straw-yellow to brownish yellow, green, greenish black; yellow to yellow-green in transmitted light.
- Hardness (Mohs)
- 5 - 5.5
- Density
- 3.67 g/cm³
- Streak
- Straw-yellow
Chemical Properties
- Chemical Formula
- (Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3
- Elements
- Ca, Fe, Mn, Na, O, P
Also Known As
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Ferroalluaudite FAQs
How do I identify Ferroalluaudite?
Ferroalluaudite can be identified by its hardness of 5 - 5.5 on the Mohs scale, Straw-yellow to brownish yellow color. Look for these key characteristics when examining specimens.
What color is Ferroalluaudite?
Ferroalluaudite typically appears in Straw-yellow to brownish yellow, green, greenish black; yellow to yellow-green in transmitted light.. Color can vary depending on impurities and formation conditions.
How hard is Ferroalluaudite?
Ferroalluaudite has a hardness of 5 - 5.5 on the Mohs scale. This gives it moderate hardness.