. 2022 Mar 9;1(1):pgac015. doi: 10.1093/pnasnexus/pgac015

Table 2.

Oxygen isotope results for farringtonite and chromite.

Pallasite	O (wt%)	δ¹⁷O	2 SE	δ¹⁸O	2 SE	Δ¹⁷O	2 SE	n
Sericho*	45.3	1.876	0.013	3.971	0.004	−0.211	0.013	60
Brahin	26.7	0.293	0.019	0.949	0.008	−0.206	0.020	60
Brenham	25.5	0.421	0.018	1.190	0.008	−0.205	0.019	60
Brenham	26.8	0.161	0.017	0.716	0.007	−0.216	0.017	60
Brenham	28.0	0.147	0.020	0.705	0.007	−0.224	0.021	60
Fukang	20.3	0.737	0.020	1.805	0.010	−0.213	0.021	60
Fukang	28.1	1.058	0.020	2.416	0.008	−0.212	0.021	60
Hambleton	27.4	0.425	0.018	1.241	0.008	−0.228	0.018	60
Hambleton	26.2	0.299	0.019	0.985	0.007	−0.219	0.019	60
Imilac	28.5	0.710	0.017	1.737	0.005	−0.204	0.017	60
Imilac	29.5	0.927	0.019	2.169	0.007	−0.214	0.021	60
Sericho	28.4	0.528	0.020	1.431	0.007	−0.224	0.020	60
Sericho	22.4	0.345	0.020	1.081	0.008	−0.224	0.019	60
Seymchan	27.8	0.299	0.015	1.000	0.006	−0.227	0.015	60
Seymchan	28.9	0.363	0.017	1.090	0.008	−0.211	0.016	60
Avg(low-Al–Mn)		0.328	0.234	1.039	0.447	−0.218	0.017
Avg(high-Al–Mn)		0.858	0.234	2.032	0.637	−0.211	0.009

High-Al–Mn subgroup samples are in italics. The Sericho farringtonite is marked with an asterisk. The errors on the average populations (underlined) are 2 SD. O (wt%) refers to the amount of oxygen generated during laser fluorination as a percentage of the sample weight. The number of analyses of each sample gas aliquot vs. the reference gas is shown in the “n” column.