Eosphorite
A variety of Minerals

What is Eosphorite?
Eosphorite is usually found in shades of brown with some hints of pink. This mineral is translucent or transparent and is relatively brittle. Eosphorite is a secondary mineral, meaning that it is the result of the weathering of another mineral. In this case, eosphorite is found in phosphate-rich Pegmatite.
Optical Properties
- Refractive Index
- 1.639-1.672
- Birefringence
- 0.025-0.030
- Optical Character
- Biaxial negative
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Eosphorite 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.
Eosphorite Localities Map
See where Eosphorite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Usually pale Brown, Golden Brown, Medium Brown to Dark Brown, occasionally, Pink, Rose red
- Hardness (Mohs)
- 5
- Density
- 3.04 g/cm³
- Streak
- White
- Luster
- Vitreous, Resinous, Sub-vitreous
- Crystal System
- Orthorhombic
Chemical Properties
- Chemical Formula
- Mn2+Al(PO4)(OH)2 · H2O
- Elements
- Al, H, Mn, O, P
Also Known As

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Eosphorite FAQs
How do I identify Eosphorite?
Eosphorite can be identified by its hardness of 5 on the Mohs scale, Usually pale Brown color, Vitreous, Resinous, Sub-vitreous luster, Orthorhombic crystal system. Look for these key characteristics when examining specimens.
What color is Eosphorite?
Eosphorite typically appears in Usually pale Brown, Golden Brown, Medium Brown to Dark Brown, occasionally, Pink, Rose red. Color can vary depending on impurities and formation conditions.
How hard is Eosphorite?
Eosphorite has a hardness of 5 on the Mohs scale. This gives it moderate hardness.


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