Phosphuranylite
A variety of Minerals
What is Phosphuranylite?
Phosphuranylite is a uranyl phosphate mineral with formula KCa(H3O)3(UO2)7(PO4)4O4·8(H2O). It was first described in 1879 by Frederick Augustus Genth, from an occurrence in the Flat Rock pegmatite in Mitchell County, North Carolina, US.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Phosphuranylite 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.
Phosphuranylite Localities Map
See where Phosphuranylite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Bright yellow; deep golden-yellow, honey-yellow
- Hardness (Mohs)
- 2.5
- Streak
- Pale yellow
Chemical Properties
- Chemical Formula
- [H3O]+3KCa(UO2)7(PO4)4O4 · 8H2O
- Elements
- Ca, H, K, O, P, U
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Phosphuranylite FAQs
How do I identify Phosphuranylite?
Phosphuranylite can be identified by its hardness of 2.5 on the Mohs scale, Bright yellow; deep golden-yellow color. Look for these key characteristics when examining specimens.
What color is Phosphuranylite?
Phosphuranylite typically appears in Bright yellow; deep golden-yellow, honey-yellow. Color can vary depending on impurities and formation conditions.
How hard is Phosphuranylite?
Phosphuranylite has a hardness of 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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