Antimonpearceit

Structural context

Polybasite
Crystal System monoclinicCrystal Class prismaticSpace Group C2/m

Chemical context

Stoichiometric formulas

Polybasite
mindat.org
  • Aug. 11, 2023[Ag6Sb2S7][Ag9CuS4]
  • March 13, 2023[Cu6Sb2S7][Ag9CuS4]
IMA
  • March 13, 2023[Ag9CuS4][(Ag,Cu)6(Sb,As)2S7]
mineralogy.rocks
  • Aug. 30, 2022[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]

Physical properties

ColorColor entities, recognized using a custom trained NER model
    • dark ruby red
    Color noteOriginal color note from the source
    Black with dark ruby red internal reflections
    StreakStreak entities, recognized using a custom trained NER model
      Streak noteOriginal streak note from the source
      Black
      Lustre
      Metallic
      Fracture
      Conchoidal
      Transparency
      Opaque
      Luminescence
      None
      Tenacity
      very brittle
      Hardness
      2.5—3
      Calculated density
      6.36