Berryite
A variety of Minerals
What is Berryite?
Berryite is a mineral with the formula Pb3(Ag,Cu)5Bi7S16. It occurs as gray to blue-gray monoclinic prisms. It is opaque and has a metallic luster. It has a Mohs hardness of 3.5 and a specific gravity of 6.7. It was first identified in 1965 using X-ray diffraction by mineralogist Leonard Gascoigne Berry (1914–1982). It is found in Park and San Juan counties in Colorado. It occurs in sulfide bearing quartz veins in Colorado and with siderite-rich cryolite in Ivigtut, Greenland.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Berryite 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.
Berryite Localities Map
See where Berryite 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
- Bluish-grey, white, grey-white.
- Hardness (Mohs)
- 3.5
- Density
- 6.83 g/cm³
Chemical Properties
- Chemical Formula
- Cu3Ag2Pb3Bi7S16 Formely considered to be Pb3(Ag,Cu)5Bi7S16.
- Elements
- Ag, Bi, Cu, Pb, S
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Berryite FAQs
How do I identify Berryite?
Berryite can be identified by its hardness of 3.5 on the Mohs scale, Bluish-grey color. Look for these key characteristics when examining specimens.
What color is Berryite?
Berryite typically appears in Bluish-grey, white, grey-white.. Color can vary depending on impurities and formation conditions.
How hard is Berryite?
Berryite has a hardness of 3.5 on the Mohs scale. This gives it moderate hardness.
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