Yet another mineral – Today: Baryte


  • named after the greek word for heavy (the density is relatively high
    with 4.5 g/cm3)
  • Formula: BaSO4
  • Space group: Pnma (No. 62)
  • Crystal system: orthorhombic
  • Crystal class: mmm
  • Lattice parameters: a = 8.88 Å, b = 5.46 Å, c = 7.16 Å, α = β = γ =  90°


Picture: Carlesmillan – CC BY-SA 3.0

Crystal structure (click on the picture to download the VESTA file):


slightly distorted SO42- tetrahedra (yellow), Ba2+ ions (green), which are surrounded by 12 oxygen atoms


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