Hureaulite
A variety of Hureaulite Group
What is Hureaulite?
Deposits of hureaulite can be found in granite volcanic rocks. It's a rare mineral, but very popular among collectors. Its beautiful pinkish crystals are too soft and fragile to be used as gems and with jewelry, and even cut cabochons are difficult to find.
Optical Properties
- Refractive Index
- 1.647-1.667
- Birefringence
- 0.012
- Pleochroism
- Colorless, yellow to pale rose, reddish yellow to reddish brown
- Optical Character
- Biaxial negative
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Hureaulite 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.
Quick Facts
Physical Properties
- Color
- Commonly pink to colorless, red, orange, orange-red, reddish brown, yellowish brown, violet-rose, amber, gray
- Hardness (Mohs)
- 5
- Rock tumbling
- With care
- Density
- 3.23 g/cm³
- Streak
- Nearly white
- Luster
- Greasy, Vitreous, Sub-vitreous
- Crystal System
- Monoclinic
Chemical Properties
- Chemical Formula
- Mn2+5(PO3OH)2(PO4)2 · 4H2O
- Elements
- H, Mn, O, P
Also Known As
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Hureaulite FAQs
How do I identify Hureaulite?
Hureaulite can be identified by its hardness of 5 on the Mohs scale, Commonly pink to colorless color, Greasy, Vitreous, Sub-vitreous luster, Monoclinic crystal system. Look for these key characteristics when examining specimens.
What color is Hureaulite?
Hureaulite typically appears in Commonly pink to colorless, red, orange, orange-red, reddish brown, yellowish brown, violet-rose, amber, gray. Color can vary depending on impurities and formation conditions.
How hard is Hureaulite?
Hureaulite has a hardness of 5 on the Mohs scale. This gives it moderate hardness.