Haiweeite
A variety of Minerals
What is Haiweeite?
Haiweeite is a mineral of uranium and has the chemical formula: Ca[(UO2)2Si5O12(OH)2]·3(H2O). It is a secondary mineral of uranium, a product of oxidation. It has a greenish yellow color. It has a Mohs hardness of about 3.5 and is fluorescent under UV light. It was named after the Haiwee Reservoir, Inyo County, California, US, where it was first found.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Haiweeite 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
- Pale yellow, greenish-yellow
- Hardness (Mohs)
- 3.5
- Rock tumbling
- Not recommended
- Density
- 4.93 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Ca(UO2)2[Si5O12(OH)2] · 6H2O
- Elements
- Ca, H, O, Si, U
Also Known As
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Haiweeite FAQs
How do I identify Haiweeite?
Haiweeite can be identified by its hardness of 3.5 on the Mohs scale, Pale yellow color. Look for these key characteristics when examining specimens.
What color is Haiweeite?
Haiweeite typically appears in Pale yellow, greenish-yellow. Color can vary depending on impurities and formation conditions.
How hard is Haiweeite?
Haiweeite has a hardness of 3.5 on the Mohs scale. This gives it moderate hardness.
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