Mineral Factbook

Wiluite

Ca19(Al,Mg)13(B,܆,Al)5(SiO4)10(Si2O7)4(O,OH)10IMA symbol: Wilapproved

Wiluite is a silicate mineral with the formula Ca19(Al,Mg)13(B,܆,Al)5(SiO4)10(Si2O7)4(O,OH)10, crystallizing in the tetragonal system. It has a calculated density of 3.44 g/cm3.

Photos

Wiluite specimen photo
Slashme · CC BY 4.0 · Commons
Wiluite specimen photo
Ra'ike (see also: de:Benutzer:Ra'ike) · CC BY-SA 3.0 · Commons
Wiluite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons
Wiluite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Crystallography

Crystal systemtetragonal crystal systemWikidata (CC0)
Space groupP 4/n n c :2
Cell (Å, °)a = 15.716, b = 15.716, c = 11.704; α = 90, β = 90, γ = 90
Cell volume2890.8 ų, Z = 2
Axial ratios1.0000:1:0.7447calculated from COD 9004959
Source structureCOD 9004959 (The Canadian Mineralogist, 2005)

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.7692.6122.9262.4851.6372.589
I/I₀10074.544.94340.638.3

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9004959; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)3.44 g/cm³calculated from COD 9004959

Classification

Nickel-Strunz (10th)9.BG.35Wikidata (CC0)
Nickel-Strunz (9th)9.BG.35Wikidata (CC0)
Dana (8th)58.2.4.2Wikidata (CC0)