Bílinite
A variety of Minerals
What is Bílinite?
Bílinite (FeFe2(SO4)·22H2O) is an iron sulfate mineral. It is a product of the oxidation of pyrite in water. It is an acidic mineral that has a pH of less than 3 and is harmful to the environment when it comes from acid rock drainage (Keith et al., 2001). Bílinite was first discovered near Bílina, Czech Republic which is why the mineral was named 'bílinite' (Palache, et al., 1969). This mineral possibly occurs on Mars.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Bílinite 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.
Bílinite Localities Map
See where Bílinite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Composition of Bílinite
The weight percent oxide is as follows:
Quick Facts
Physical Properties
- Color
- White to yellowish
- Hardness (Mohs)
- 2
- Density
- 1.99 g/cm³
Chemical Properties
- Chemical Formula
- Fe2+Fe3+2(SO4)4 · 22H2O
- Elements
- Fe, H, O, S
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Bílinite FAQs
How do I identify Bílinite?
Bílinite can be identified by its hardness of 2 on the Mohs scale, White to yellowish color. Look for these key characteristics when examining specimens.
What color is Bílinite?
Bílinite typically appears in White to yellowish. Color can vary depending on impurities and formation conditions.
How hard is Bílinite?
Bílinite has a hardness of 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the composition of bílinite of Bílinite?
The weight percent oxide is as follows:
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