Zwieselite
A variety of Triplite Group
What is Zwieselite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Zwieselite 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.
Zwieselite Localities Map
See where Zwieselite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Dark brown; black (altered)
- Hardness (Mohs)
- 5 - 5.5
- Density
- 3.92 g/cm³
- Streak
- White to tan
Chemical Properties
- Chemical Formula
- Fe2+2(PO4)F
- Elements
- F, Fe, O, P
Identify Zwieselite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Zwieselite FAQs
How do I identify Zwieselite?
Zwieselite can be identified by its hardness of 5 - 5.5 on the Mohs scale, Dark brown; black (altered) color. Look for these key characteristics when examining specimens.
What color is Zwieselite?
Zwieselite typically appears in Dark brown; black (altered). Color can vary depending on impurities and formation conditions.
How hard is Zwieselite?
Zwieselite has a hardness of 5 - 5.5 on the Mohs scale. This gives it moderate hardness.