Tungstite
A variety of Minerals
What is Tungstite?
Tungstite is a hydrous tungsten oxide mineral with formula: WO3·H2O. It is a secondary mineral formed by the weathering of other tungsten containing minerals. It crystallizes in the orthorhombic system in translucent yellow to yellow green masses. It is clay-like with Mohs hardness of 2.5 and a specific gravity of 5.5. It was first described in 1868 for an occurrence near Trumbull, Connecticut at the Hubbard Tungsten Mine at Long Hill.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Tungstite 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.
Tungstite Localities Map
See where Tungstite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Yellow, yellow-green, golden-yellow; yellow in transmitted light
- Hardness (Mohs)
- 2.5
Chemical Properties
- Chemical Formula
- WO3 · H2O
- Elements
- H, O, W
Also Known As
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Tungstite FAQs
How do I identify Tungstite?
Tungstite 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 Tungstite?
Tungstite typically appears in Yellow, yellow-green, golden-yellow; yellow in transmitted light. Color can vary depending on impurities and formation conditions.
How hard is Tungstite?
Tungstite 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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