Mineral Factbook

Tetrataenite

FeNiIMA symbol: Ttaeapproved

Tetrataenite is a native element or alloy mineral with the formula FeNi, crystallizing in the monoclinic system. It has a calculated density of 8.264 g/cm3.

Photos

Tetrataenite specimen photo
Galuskin, E.V.; Galuskina, I.O.; Kusz, J.; Książek, M.; Vapnik, Y.; Zieliński, G. · CC BY 4.0 · Commons
Tetrataenite specimen photo
Galuskin, E.V.; Galuskina, I.O.; Kusz, J.; Książek, M.; Vapnik, Y.; Zieliński, G. · CC BY 4.0 · Commons
Tetrataenite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons
Tetrataenite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Crystallography

Crystal systemmonoclinic crystal systemWikidata (CC0)
Space groupP 1 m 1
Cell (Å, °)a = 3.581, b = 3.582, c = 3.587; α = 90, β = 90.04, γ = 90
Cell volume46.011 ų, Z = 4
Axial ratios0.9997:1:1.0014calculated from COD 9011506
Source structureCOD 9011506 (Zeitschrift fur Kristallographie, 1995) — 1 of 2 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.0692.0681.7911.7931.791.267
I/I₀10098.73130.630.317.4

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9011506; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)8.264 g/cm³calculated from COD 9011506

Chemistry (calculated)

Molecular weight114.54 g/molcalculated from the IMA formula
Composition (wt%)Fe 48.76%, Ni 51.24%

Classification

Nickel-Strunz (10th)1.AE.10Wikidata (CC0)
Nickel-Strunz (9th)1.AE.10Wikidata (CC0)