Mineral Factbook

Kësterite

Cu2ZnSnS4IMA symbol: Kësgrandfathered

Kësterite is a halide mineral with the formula Cu2ZnSnS4. It has a calculated density of 4.533 g/cm3. Its streak is black.

Photos

Kësterite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons
Kësterite specimen photo
Carles Millan · CC BY 3.0 · Commons
Kësterite specimen photo
Carles Millan · CC BY 3.0 · Commons
Kësterite specimen photo
Carles Millan · CC BY 3.0 · Commons

Crystallography

Space groupI -4 2 m
Cell (Å, °)a = 5.425, b = 5.425, c = 10.868; α = 90, β = 90, γ = 90
Cell volume319.852 ų, Z = 2
Axial ratios1.0000:1:2.0033calculated from COD 9004748
Source structureCOD 9004748 (The Canadian Mineralogist, 2003) — 1 of 4 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)3.1341.921.6361.9181.6381.108
I/I₀10039.527.919.71413

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9004748; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)4.533 g/cm³calculated from COD 9004748
Streak
blacksingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight439.47 g/molcalculated from the IMA formula
Composition (wt%)Cu 28.92%, Zn 14.88%, Sn 27.01%, S 29.19%

Classification

Nickel-Strunz (10th)3.CB.15aWikidata (CC0)
Nickel-Strunz (9th)2.CB.15aWikidata (CC0)