Miargyrite
A variety of Minerals
What is Miargyrite?
Miargyrite is a mineral, a sulfide of silver and antimony with the formula AgSbS2. It is a dimorph of cuboargyrite. Originally discovered in the Freiberg district of Germany in 1824, it has subsequently been found in many places where silver is mined. It usually occurs in low temperature hydrothermal deposits. and forms black metallic crystals which may show a dark red internal reflection. The streak is also red. Miargyrite is named from the Greek meyon, "smaller" and argyros, "silver," as its silver content is lower than most silver sulfides.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Miargyrite 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.
Miargyrite Localities Map
See where Miargyrite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- Black with dark red internal reflections
- Hardness (Mohs)
- 2.5
- Density
- 5.29 g/cm³
- Streak
- Cherry red
Chemical Properties
- Chemical Formula
- AgSbS2
- Elements
- Ag, S, Sb
Also Known As
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Miargyrite FAQs
How do I identify Miargyrite?
Miargyrite can be identified by its hardness of 2.5 on the Mohs scale, Black with dark red internal reflections color. Look for these key characteristics when examining specimens.
What color is Miargyrite?
Miargyrite typically appears in Black with dark red internal reflections. Color can vary depending on impurities and formation conditions.
How hard is Miargyrite?
Miargyrite has a hardness of 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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