Parsonsite
A variety of Minerals
What is Parsonsite?
Parsonsite is a lead uranium phosphate mineral with chemical formula: Pb2(UO2)(PO4)2·2H2O. Parsonsite contains about 45% lead and 25% uranium. It forms elongated lathlike pseudo monoclinic crystals, radial spherulites, encrustations and powdery aggregates. It is of a light yellow colour. It has a Mohs hardness of 2.5-3 and a specific gravity of 5.72 - 6.29. It was first described in 1923 for an occurrence in the Shinkolobwe mine, Katanga Copper Crescent, Democratic Republic of Congo. It was named for mineralogist Arthur Leonard Parsons (1873–1957) of the University of Toronto, Canada.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Parsonsite 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.
Parsonsite Localities Map
See where Parsonsite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Light citron-yellow, honey-brown, green-brown, pale rose (rare); pale yellow in transmitted light.
- Hardness (Mohs)
- 2.5 - 3
- Density
- 6.21 g/cm³
Chemical Properties
- Chemical Formula
- Pb2(UO2)(PO4)2 Water content appears to be variable. Both 0-0.5H2O and ~2H2O per formula unit were measured.
- Elements
- H, O, P, Pb, U
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Parsonsite FAQs
How do I identify Parsonsite?
Parsonsite can be identified by its hardness of 2.5 - 3 on the Mohs scale, Light citron-yellow color. Look for these key characteristics when examining specimens.
What color is Parsonsite?
Parsonsite typically appears in Light citron-yellow, honey-brown, green-brown, pale rose (rare); pale yellow in transmitted light.. Color can vary depending on impurities and formation conditions.
How hard is Parsonsite?
Parsonsite has a hardness of 2.5 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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