Kellyite
A variety of Minerals
What is Kellyite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Kellyite 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.
Kellyite Localities Map
See where Kellyite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Yellow
- Hardness (Mohs)
- 2.5
- Density
- 3.11 g/cm³
Chemical Properties
- Chemical Formula
- Mn2+2Al(AlSiO5)(OH)4
- Elements
- Al, H, Mn, O, Si
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Kellyite FAQs
How do I identify Kellyite?
Kellyite can be identified by its hardness of 2.5 on the Mohs scale, Yellow color. Look for these key characteristics when examining specimens.
What color is Kellyite?
Kellyite typically appears in Yellow. Color can vary depending on impurities and formation conditions.
How hard is Kellyite?
Kellyite 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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