Table 1.

Electron Probe analysis of quasicrystals in S1234.

n	ROI 1	ROI 2
	7	3
Weight percent
Al	51.8 ± 2.9	57.3 ± 1.1
Fe	20.1 ± 1.2	14.4 ± 1.4
Cu	19.9 ± 1.3	22.3 ± 1.5
Cr	5.2 ± 0.5	3.7 ± 0.3
Ni	2.1 ± 0.3	1.5 ± 0.1
Total	99.1	99.2
Normalized atomic percent
Al	70.3 ± 2.3	75.1 ± 0.5
Fe	13.2 ± 1.0	9.1 ± 1.0
Cu	11.5 ± 1.0	12.4 ± 0.7
Cr	3.7 ± 0.4	2.5 ± 0.2
Ni	1.3 ± 0.2	0.89 ± 0.04

(Analyses filtered for analytical totals above 98%; uncertainty reported is one standard deviation).