Sartorite

• Named after Wolfgang Sartorius von Waltershausen (1809 – 1876) Professor of Mineralogy, University of Göttingen, Germany. He was the first who described the mineral.
• Formula: PbAs₂S₄
• Space group: P2₁/n (No. 14)
• Crystal system: monoclinic
• Crystal class: 2/m
• Lattice parameters: a = 19.62 Å, b = 7.89 Å, c = 4.19 Å, α = γ = 90°,  β = 90° (!)

---

Picture: Rob Lavinsky, iRocks.com – 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).)

• PbS₉ polyhedra (gray)
• AsS₃ trigonal pyramids (green)
• Sulfur (yellow)

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

https://skfb.ly/6IYWO

Advertisement