Pascoite – a mineral with decavanadate anions

Pascoite

• Named after its type locality Pasco Province, Peru
• Formula: Ca₃V₁₀O₂₈ · 17 H₂O
• Space group: C2/m (No. 12)
• Crystal system: monoclinic
• Crystal class: 2/m
• Lattice parameters: a = 19.586 Å, b = 10.141 Å, c = 10.911 Å, α = γ  = 90°, β = 120.815°

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Picture: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0

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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).)

 

• Clusters of Decavanadate anions [V₁₀O₂₈]^6- (orange)
• CaO₇ polyhedra (blue)
• Oxygen (red)
• Hydrogen (white)

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

https://skfb.ly/696Kr

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