Table 1.

Average elemental concentrations obtained by LA-ICP-MS. Group IIC irons are listed from left to right in order of decreasing Re concentration.

	Darinskoe	Perryville	Cratheús (1950)	Kumerina	Ballinoo	Salt River	Unter Mässing	Wiley	Cratheús (Field Museum)	Parà de Minas
Re	1.4 ± 1.0	1.1 ± 0.3	1.0 ± 0.2	0.9 ± 0.2	0.8 ± 0.2	0.7 ± 0.1	0.4 ± 0.1	0.2 ± 0.1	0.22 ± 0.03	0.21 ± 0.09
Os	17.4 ± 7.2	15.3 ± 2.9	12.2 ± 1.4	10.8 ± 2.3	10.9 ± 1.9	8.2 ± 1.3	4.5 ± 1.3	1.0 ± 0.2	2.8 ± 0.8	2.5 ± 0.3
W	2.8 ± 1.3	1.7 ± 1.5	1.9 ± 0.3	1.7 ± 1.5	1.7 ± 1.2	1.5 ± 1.1	2.0 ± 0.9	0.7 ± 0.5	0.3 ± 0.1	0.8 ± 0.9
Ir	13.7 ± 4.6	13.7 ± 3.0	10.7 ± 1.3	9.9 ± 1.7	9.6 ± 1.0	8.4 ± 0.6	5.2 ± 1.3	6.8 ± 1.0	2.3 ± 0.4	2.2 ± 0.4
Mo	10.3 ± 4.0	9.0 ± 4.4	8.5 ± 4.8	9.3 ± 2.4	8.9 ± 4.3	8.0 ± 2.7	10.1 ± 9.6	13.6 ± 6.2	5.4 ± 0.4	9.0 ± 17.0
Ru	15.9 ± 8.3	15.7 ± 5.7	12.5 ± 1.7	13.6 ± 1.3	11.8 ± 2.4	11.3 ± 0.9	10.2 ± 2.3	28.9 ± 10.8	4.9 ± 0.4	4.0 ± 0.4
V	0.6 ± 0.3	b.d.	0.4 ± 0.9	0.03 ± 0.01	0.02 ± 0.02	b.d.	b.d.	b.d.	0.028 ± 0.001	0.2 ± 0.7
Pt	17.8 ± 5.8	19.5 ± 3.7	15.0 ± 2.4	15.7 ± 2.2	14.8 ± 1.4	16.7 ± 1.9	14.2 ± 5.4	38.9 ± 6.0	6.0 ± 0.8	5.9 ± 0.5
Rh	2.1 ± 0.8	2.0 ± 0.7	1.7 ± 0.2	1.8 ± 0.2	1.7 ± 0.2	1.7 ± 0.1	1.7 ± 0.5	4.0 ± 1.1	0.9 ± 0.3	0.8 ± 0.1
Ni	9.7 ± 3.0	10.4 ± 3.1	9.4 ± 2.3	10.5 ± 2.4	9.5 ± 1.9	9.3 ± 0.4	10.2 ± 3.9	10.8 ± 2.5	7.4 ± 0.3	6.8 ± 1.2
Co	0.6 ± 0.1	0.6 ± 0.1	0.57 ± 0.02	0.58 ± 0.02	0.57 ± 0.05	0.59 ± 0.04	0.57 ± 0.03	0.8 ± 0.1	0.42 ± 0.01	0.41 ± 0.02
Fea	89.0	93.7	91.0	90.3	90.4	90.0	90.2	88.5	91.0	91.5
Pd	3.8 ± 1.4	3.9 ± 1.4	3.0 ± 0.4	3.9 ± 0.9	3.5 ± 0.9	3.5 ± 0.6	3.7 ± 1.1	4.8 ± 1.9	3.9 ± 0.5	3.0 ± 0.9
Cr	103 ± 56	143 ± 96	111 ± 145	101 ± 35	78 ± 51	66 ± 33	100 ± 47	b.d.	155 ± 5	34 ± 59
P	0.3 ± 0.4	1.0 ± 1.2	0.5 ± 0.8	2.4 ± 4.5	1.2 ± 2.1	1.4 ± 2.2	1.5 ± 3.2	0.6 ± 1.0	0.19 ± 0.02	0.06 ± 0.03
Mn	b.d.	b.d.	12.1 ± 22.2	b.d.	b.d.	b.d.	b.d.	b.d.	b.d.	1.0 ± 1.1
As	7.7 ± 2.5	6.7 ± 2.3	6.2 ± 1.0	5.8 ± 0.3	7.1 ± 2.3	7.9 ± 2.9	10.2 ± 2.7	13.9 ± 3.4	3.6 ± 0.5	4.9 ± 2.6
Au	0.8 ± 0.2	1.0 ± 0.1	0.6 ± 0.1	b.d.	0.8 ± 0.0	1.4 ± 0.2	1.3 ± 1.0	1.1 ± 0.1	b.d.	0.9 ± 0.1
Ga	49 ± 10	44 ± 12	40 ± 5	42 ± 4	41 ± 5	41 ± 4	40 ± 6	45 ± 2	2.2 ± 0.3	3.7 ± 3.2
Ge	112 ± 36	113 ± 42	96 ± 11	108 ± 11	101 ± 13	109 ± 13	103 ± 9	129 ± 10	b.d.	b.d.
Zn	0.5 ± 1.6	0.04 ± 0.10	0.2 ± 0.4	0.1 ± 0.2	0.2 ± 0.3	0.1 ± 0.1	0.1 ± 0.1	0.02 ± 0.01	0.008 ± 0.004	0.1 ± 0.2
n	5	6	8	6	7	6	13	6	6	4

Nickel, Co, and Fe concentrations reported in wt.%, all others reported in ppm.

The 2σ values reported were determined from the reproducibility of the number of lines measured (n) for each sample.

b.d. Concentration data below detection limits.

^aFe data were used as an internal standard.