Russellite
A variety of Minerals
What is Russellite?
Russellite is a bismuth tungstate mineral with the chemical formula Bi2WO6. It crystallizes in the orthorhombic crystal system. Russellite is yellow or yellow-green in color, with a Mohs hardness of 3 ⁄2. Russellite is named for the mineralogist Sir Arthur Russell, and the type locality is the Castle-an-Dinas Mine, near St Columb Major in Cornwall, where it was found in 1938 in wolframite. It occurs as a secondary alteration of other bismuth bearing minerals in tin - tungsten hydrothermal ore deposits, pegmatites and greisens. It typically occurs associated with native bismuth, bismuthinite, bismite, wolframite, ferberite, scheelite, ferritungstite, anthoinite, mpororoite, koechlinite, cassiterite, topaz, muscovite, tourmaline and quartz.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Russellite 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.
Russellite Localities Map
See where Russellite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Yellow-green, yellow
- Hardness (Mohs)
- 3.5
- Density
- 7.4 g/cm³
Chemical Properties
- Chemical Formula
- Bi2WO6
- Elements
- Bi, O, W
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Russellite FAQs
How do I identify Russellite?
Russellite can be identified by its hardness of 3.5 on the Mohs scale, Yellow-green color. Look for these key characteristics when examining specimens.
What color is Russellite?
Russellite typically appears in Yellow-green, yellow. Color can vary depending on impurities and formation conditions.
How hard is Russellite?
Russellite has a hardness of 3.5 on the Mohs scale. This gives it moderate hardness.
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