Axinite-(fe)
Axinite-(Fe)
A variety of Minerals
What is Axinite-(fe)?
Axinite is a brown to violet-brown, or reddish-brown bladed group of minerals composed of calcium aluminium boro-silicate, (Ca,Fe,Mn)3Al2BO3Si4O12OH. Axinite is pyroelectric and piezoelectric. The axinite group includes: Axinite-(Fe) or ferroaxinite, Ca2FeAl2BOSi4O15(OH) iron rich, clove-brown, brown, plum-blue, pearl-gray Axinite-(Mg) or magnesioaxinite, Ca2MgAl2BOSi4O15(OH) magnesium rich, pale blue to pale violet; light brown to light pink Axinite-(Mn) or manganaxinite, Ca2MnAl2BOSi4O15(OH) manganese rich, honey-yellow, clove-brown, brown to blue Tinzenite, (CaFeMn)3Al2BOSi4O15(OH) iron – manganese intermediate, yellow, brownish yellow-green Axinite is sometimes used as a gemstone.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Axinite-(fe) 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.
Axinite-(fe) Localities Map
See where Axinite-(fe) is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Brown, clove-brown, plum blue, pearl gray
- Hardness (Mohs)
- 6.5 - 7
- Density
- 3.33 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Ca2Fe2+Al2BSi4O15OH
- Elements
- Al, B, Ca, Fe, H, O, Si
Also Known As
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Axinite-(fe) FAQs
How do I identify Axinite-(fe)?
Axinite-(fe) can be identified by its hardness of 6.5 - 7 on the Mohs scale, Brown color. Look for these key characteristics when examining specimens.
What color is Axinite-(fe)?
Axinite-(fe) typically appears in Brown, clove-brown, plum blue, pearl gray. Color can vary depending on impurities and formation conditions.
How hard is Axinite-(fe)?
Axinite-(fe) has a hardness of 6.5 - 7 on the Mohs scale. This gives it moderate hardness.
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