polybasite
Sign in to savePolybasite is a sulfosalt mineral of silver, copper, antimony and arsenic. Its chemical formula is .
Key facts
- Mineral.name
- Polybasite
- Mineral.image
- Polybasite-37890.jpg
- Mineral.category
- Sulfosalt minerals
- Mineral.IMAsymbol
- Plb
- Mineral.strunz
- 2.GB.15
- Mineral.system
- Monoclinic and trigonal polytypes
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- C2/c
- Mineral.colour
- steel black
- Mineral.cleavage
- poor on (001)
- Mineral.fracture
- uneven
- Mineral.mohs
- 1.5–2
- Mineral.lustre
- metallic, adamantine or glimmering
- Mineral.streak
- black with reddish tint
- Mineral.gravity
- 6–6.2
via Wikipedia infobox
Wikidata facts
- Subclass of
- sulfate mineral
- Named after
- foundation
- Image
- Mineraly.sk - polybazit-per2.jpg
Show 7 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 2.GB.15
- Strunz 8th edition (series ID, updated)
- II/D.03
- IMA Mineral Symbol
- Plb
- Nickel-Strunz 9th edition (updated 2009)
- 2.GB.15
- chemical formula
- [Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]
- Commons category
- Polybasite
- crystal system
- monoclinic crystal system
Sources (1)
via Wikidata · CC0
~1 min read
Encyclopedic overview
2 sectionsContents
- Images
- References
Polybasite is a sulfosalt mineral of silver, copper, antimony and arsenic. Its chemical formula is .
It forms black monoclinic crystals (thin, tabular, with six corners) which can show dark red internal reflections. It has a Mohs hardness of 2.5 to 3. It is found worldwide and is an ore of silver. The name comes from the number of base metals in the mineral.
Excerpted from Wikipedia’s “polybasite” article, available under the CC BY-SA 4.0 licence.