• Named after its type locality Djebel Nador, Constantine, Algeria
  • Formula: PbSbO2Cl
  • Space group: Cmcm (No. 63)
  • Crystal system: orthorhombic
  • Crystal class: mmm
  • Lattice parameters: a = 5.603 Å, b = 12.245 Å, c = 5.448 Å, α = β = γ = 90°


Picture: Christian Rewitzer – CC-BY-SA-3.0


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

(K. Momma and F. Izumi, “VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data,”J. Appl. Crystallogr., 44, 1272-1276 (2011).)



  • PbO4Cl4 square antiprisms (gray)
  • SbO4 square pyramids (purple)
  • Oxygen (red)
  • Chlorine (green)

For a 3D interactive version on sketchfab, see here:


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