Thorbastnäsite
A variety of Minerals
What is Thorbastnäsite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Thorbastnäsite 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
- Brown
- Hardness (Mohs)
- 4 - 4.5
- Rock tumbling
- Not recommended
Chemical Properties
- Chemical Formula
- ThCa(CO3)2F2 · 3H2O May contain minor REE.
- Elements
- C, Ca, F, H, O, Th
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Thorbastnäsite FAQs
How do I identify Thorbastnäsite?
Thorbastnäsite can be identified by its hardness of 4 - 4.5 on the Mohs scale, Brown color. Look for these key characteristics when examining specimens.
What color is Thorbastnäsite?
Thorbastnäsite typically appears in Brown. Color can vary depending on impurities and formation conditions.
How hard is Thorbastnäsite?
Thorbastnäsite has a hardness of 4 - 4.5 on the Mohs scale. This gives it moderate hardness.
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