Mineral Factbook

Sekaninaite

Fe2+2Al4Si5O18IMA symbol: Sknapproved

Sekaninaite is a silicate mineral with the formula Fe2+2Al4Si5O18, crystallizing in the orthorhombic system. It has a calculated density of 2.734 g/cm3.

Photos

Sekaninaite specimen photo
Fred Cherrygarden · CC BY-SA 4.0 · Commons
Sekaninaite specimen photo
Jan Helebrant · CC BY-SA 2.0 · Commons
Sekaninaite specimen photo
Jan Helebrant · CC BY-SA 2.0 · Commons
Sekaninaite specimen photo
Jan Helebrant · CC BY-SA 2.0 · Commons

Crystallography

Crystal systemorthorhombic crystal systemWikidata (CC0)
Space groupC c c m
Cell (Å, °)a = 17.234, b = 9.8457, c = 9.3463; α = 90, β = 90, γ = 90
Cell volume1585.89 ų, Z = 4
Axial ratios1.7504:1:0.9493calculated from COD 9017602
Source structureCOD 9017602 (Mineralogical Magazine, 2013) — 1 of 3 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)8.5493.4024.1018.6173.3893.154
I/I₀10070.959.556.641.135.4

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9017602; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)2.734 g/cm³calculated from COD 9017602

Classification

Nickel-Strunz (10th)9.CJ.10Wikidata (CC0)
Nickel-Strunz (9th)9.CJ.10Wikidata (CC0)