Bavsiite – A mineral containing Ba, V, Si,…

Bavsiite

• Named for the constituting elements Barium, Vanadium and Silicon.
• Bavsiite is polymorphic to Suzukiite, BaVSi₂O₇, which is orthorhombic.
• Formula: Ba₂V₂O₂[Si₄O₁₂]
• Space group: I4/m (No. 87)
• Crystal system: tetragonal
• Crystal class: 4/m
• Lattice parameters: a = b = 7.043(1) Å, c = 11.444(2) Å, α = β = γ = 90°

---

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).)

• BaO₁₂ polyhedra (not shown as polyhedra, Ba green)
• SiO₄ tetraedra (yellow) building single four-rings
• VO₅ square pyramids (blue)
• Oxygen (red)

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

https://skfb.ly/6PYVA

Reference:
Bavsiite, Ba₂V₂O₂[Si₄O₁₂], mineral data and crystal structure
H.-P. Bojar, F. Walter, J. Baumgartner
Mineralogical Magazine 2019, 83, 821-827

DOI: 10.1180/mgm.2019.59

Advertisement