Stützite
A variety of Minerals
What is Stützite?
Stützite or stuetzite is a silver telluride mineral with formula: Ag5−xTe3 (with x = 0.24 to 0.36) or Ag7Te4. It was first described in 1951 from a museum specimen from Sacarimb, Romania. It was named for Austrian mineralogist Xavier Stütz (1747–1806). It occurs with other sulfide and telluride minerals in hydrothermal ore occurrences. Associated minerals include sylvanite, hessite, altaite, petzite, empressite, native tellurium, native gold, galena, sphalerite, colusite, tennantite and pyrite.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Stützite 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.
Stützite Localities Map
See where Stützite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Dark lead-grey, bronze-brown to iridescent (tarnished)
- Hardness (Mohs)
- 3.5
- Streak
- Grey-black
Chemical Properties
- Chemical Formula
- Ag5-xTe3, x = 0.24-0.36 Idealised Ag7Te4
- Elements
- Ag, Te
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Stützite FAQs
How do I identify Stützite?
Stützite can be identified by its hardness of 3.5 on the Mohs scale, Dark lead-grey color. Look for these key characteristics when examining specimens.
What color is Stützite?
Stützite typically appears in Dark lead-grey, bronze-brown to iridescent (tarnished). Color can vary depending on impurities and formation conditions.
How hard is Stützite?
Stützite has a hardness of 3.5 on the Mohs scale. This gives it moderate hardness.
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