Bartonite
A variety of Minerals
What is Bartonite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Bartonite 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.
Bartonite Localities Map
See where Bartonite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Blackish-brown
- Hardness (Mohs)
- 3.5
- Density
- 3.286 g/cm³
- Streak
- Black
Chemical Properties
- Chemical Formula
- K6Fe20S26S
- Elements
- Fe, K, S
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Bartonite FAQs
How do I identify Bartonite?
Bartonite can be identified by its hardness of 3.5 on the Mohs scale, Blackish-brown color. Look for these key characteristics when examining specimens.
What color is Bartonite?
Bartonite typically appears in Blackish-brown. Color can vary depending on impurities and formation conditions.
How hard is Bartonite?
Bartonite has a hardness of 3.5 on the Mohs scale. This gives it moderate hardness.
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