EA5.

Results for the standard-spikes mixes (SS A and SS B). These data have been corrected for oxygen isotope interferences (as indicated) and for mass fractionation using ⁹⁹Ru/¹⁰¹Ru = 0.745075 and the isotopic species. Samples have been compared to the Ru Alfa Aesar standard analyses of the respective analytical campaign.

	96/101Ru	2SE	98/101Ru	2SE	100/101Ru	2SE	102/101Ru	2SE	104/101Ru	2SE
Corrected using an assumed oxygen isotope composition [32]
SS B1	0.32183	0.000003	0.108954	0.000002	0.737156	0.000003	1.853217	0.000008	1.097482	0.000009
SS B2a	0.321838	0.000004	0.10896	0.000002	0.737155	0.000003	1.853152	0.000009	1.097416	0.00001
SS B2b	0.321824	0.000004	0.108955	0.000002	0.737158	0.000003	1.853212	0.000009	1.097449	0.00001
SS B2c	0.321833	0.000009	0.108962	0.000005	0.737155	0.000005	1.853209	0.000021	1.09748	0.000025
SS B3	0.321816	0.000003	0.108949	0.000002	0.737157	0.000002	1.853216	0.000008	1.097445	0.000007
Mean	0.321828	0.000005	0.108956	0.000002	0.737156	0.000003	1.853201	0.000011	1.097454	0.000012
μ (ppm)	6.9		5.9		27.3		6.5		15.7
±2σ (ppm)	54.2		93.0		3.2		29.8		50.3
SS A1a	0.321821	0.000006	0.108951	0.000003	0.737146	0.000005	1.853225	0.000011	1.09746	0.000014
SS A1b	0.321836	0.000004	0.10896	0.000002	0.737149	0.000002	1.853216	0.000008	1.097461	0.00001
SS A1c	0.321826	0.000004	0.108952	0.000002	0.737145	0.000003	1.853201	0.00001	1.09744	0.000012
SS A1d	0.321823	0.000003	0.108959	0.000002	0.737149	0.000003	1.853208	0.000009	1.097469	0.000009
SS A1e	0.321843	0.000007	0.108968	0.000003	0.737147	0.000006	1.853138	0.000016	1.097425	0.000017
SS A1f	0.321829	0.000004	0.108954	0.000003	0.737146	0.000004	1.853215	0.00001	1.097458	0.00001
A2	0.321822	0.000003	0.108944	0.000002	0.737147	0.000003	1.853249	0.000008	1.09748	0.000009
Mean	0.321829	0.000005	0.108955	0.000002	0.737147	0.000004	1.853208	0.00001	1.097456	0.000012
μ (ppm)	7.23		−2.0		14.5		10.1		17.4
±2σ (ppm)	51.0		141.8		3.9		36.9		33.0
Corrected using a line-by-line measured oxygen isotope composition
SSB2d	0.321771	0.000003	0.108914	0.000001	0.737165	0.000002	1.85341	0.000008	1.097524	0.000008
SSB2e	0.321795	0.000003	0.108932	0.000002	0.737162	0.000003	1.853323	0.000007	1.097493	0.000008
SSB2f	0.321763	0.000003	0.108911	0.000001	0.737162	0.000002	1.853388	0.000007	1.097481	0.000008
SSB2f (repeat)	0.321716	0.000009	0.108881	0.000005	0.737165	0.000005	1.853563	0.000024	1.097612	0.00002
Mean	0.321771	0.000003	0.108914	0.000001	0.737165	0.000002	1.85341	0.000008	1.097524	0.000008
μ (ppm)	21		146.1		27.3		−24.7		−39.2
±2σ (ppm)	206.2		389		3.9		109.4		108.3
A2	0.321792	0.000002	0.108919	0.000001	0.737151	0.000002	1.853333	0.000006	1.097486	0.000007
μ (ppm)	117.2		237.5		10.7		−72.2		−76.8