Khatyrkite

CuAl₂IMA symbol: Ktkapproved

Khatyrkite is a native element or alloy mineral with the formula CuAl2, crystallizing in the tetragonal system. It has a calculated density of 4.348 g/cm3.

Photos

Khatyrkite specimen photo — Paul J. Steinhardt et al. · CC BY 4.0 · Commons

Crystallography

Crystal system	tetragonal crystal systemWikidata (CC0)
Space group	I 4/m c m
Cell (Å, °)	a = 6.067, b = 6.067, c = 4.877; α = 90, β = 90, γ = 90
Cell volume	179.515 Å³, Z = 4
Axial ratios	1.0000:1:0.8039calculated from COD 9012196
Source structure	COD 9012196 (Journal of Solid State Chemistry, 1989)

Powder X-ray diffraction (calculated)

d (Å)	4.29	2.12	1.919	1.901	2.371	2.145
I/I₀	100	78.6	75.7	62.9	51.7	34.1

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9012196; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)	4.348 g/cm³calculated from COD 9012196

Chemistry (calculated)

Molecular weight	117.51 g/molcalculated from the IMA formula
Composition (wt%)	Cu 54.08%, Al 45.92%

Classification

Nickel-Strunz (10th)	1.AA.15Wikidata (CC0)
Nickel-Strunz (9th)	1.AA.15Wikidata (CC0)