Mineral Factbook

Pseudowollastonite

CaSiO3IMA symbol: Pwoapproved

Pseudowollastonite is a silicate mineral with the formula CaSiO3, crystallizing in the monoclinic system. It has a calculated density of 2.908 g/cm3.

Photos

Pseudowollastonite specimen photo
Galuskin, E.V.; Galuskina, I.O.; Książek, M.; Kusz, J.; Vapnik, Y.; Zieliński, G. · CC BY 4.0 · Commons
Pseudowollastonite specimen photo
Galuskin, Evgeny V., Joachim Kusz, Irina O. Galuskina, Yevgeny Vapnik, and Grzegorz Zieliński · CC BY 4.0 · Commons
Pseudowollastonite specimen photo
David Hospital · CC BY-SA 4.0 · Commons
Pseudowollastonite specimen photo
Galuskin, E.V.; Galuskina, I.O.; Książek, M.; Kusz, J.; Vapnik, Y.; Zieliński, G. · CC BY 4.0 · Commons

Crystallography

Crystal systemmonoclinic crystal systemWikidata (CC0)
Space groupC 1 2/c 1
Cell (Å, °)a = 6.83556, b = 11.86962, c = 19.6255; α = 90, β = 90.6805, γ = 90
Cell volume1592.21 ų, Z = 24
Axial ratios0.5759:1:1.6534calculated from COD 9017535
Source structureCOD 9017535 (Lithos, 2012) — 1 of 3 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)1.9743.2273.2392.82.8162.453
I/I₀10084.979.472.870.750.4

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9017535; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)2.908 g/cm³calculated from COD 9017535

Chemistry (calculated)

Molecular weight116.16 g/molcalculated from the IMA formula
Composition (wt%)Ca 34.5%, Si 24.18%, O 41.32%

Classification

Nickel-Strunz (10th)9.CA.20Wikidata (CC0)
Nickel-Strunz (9th)9.CA.20Wikidata (CC0)