Mineral Factbook

Vlasovite

Na2ZrSi4O11IMA symbol: Vsvapproved

Vlasovite is a silicate mineral with the formula Na2ZrSi4O11, crystallizing in the monoclinic system. It has a calculated density of 3.072 g/cm3. Its streak is white.

Photos

Vlasovite specimen photo
S. Rae from Scotland, UK · CC BY 2.0 · Commons
Vlasovite specimen photo
John Sobolewski (JSS) · CC BY 3.0 · Commons
Vlasovite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons
Vlasovite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Crystallography

Crystal systemmonoclinic crystal systemWikidata (CC0)
Space groupC 1 2/c 1
Cell (Å, °)a = 10.98, b = 10, c = 8.52; α = 90, β = 100.4, γ = 90
Cell volume920.127 ų, Z = 4
Axial ratios1.0980:1:0.8520calculated from COD 9009431
Source structureCOD 9009431 (Kristallografiya, 1974) — 1 of 3 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)3.2112.92653.3445.2133.644
I/I₀10094.771.868.25856.3

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9009431; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)3.072 g/cm³calculated from COD 9009431
Streak
whitesingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight425.54 g/molcalculated from the IMA formula
Composition (wt%)Na 10.81%, Zr 21.44%, Si 26.4%, O 41.36%

Classification

Nickel-Strunz (10th)9.DM.25Wikidata (CC0)
Nickel-Strunz (9th)9.DM.25Wikidata (CC0)