Table 3.

Mass-dependent Mg, Ca, and Ni isotope compositions along with U isotope compositions of the investigated samples and standards.

Sample	Notes	δ25/24Mg	2SD	δ26/24Mg	2SD	δ44/40Ca	2SD	δ60/58Ni	2SD	δ238/235U	2SD
Egg 2 Plag	ND	-	-	-	-	0.05	0.14	3.86	0.06	−0.32	0.16
Egg 2 high-Mg Px	ND	-	-	-	-	0.02	0.08	3.94	0.06	−0.36	0.16
Egg 2 high-Fe Px	ND	-	-	-	-	0.40	0.14	4.24	0.06	−0.38	0.16
Egg 2 bulk	ND	-	-	-	-	-	-	4.15	0.06	-	-
CAI 164	PUC	3.32	0.09	7.30	0.18	0.60	0.08	0.21	0.06	−0.30	0.12
CAI 165	PUC	4.13	0.06	9.07	0.11	−4.06	0.08	1.94	0.06	−0.33	0.11
CAI 166	PC	−0.50	0.05	−0.04	0.09	−8.28	0.08	−0.08	0.06	−3.42	0.28
CAI 167	PC	−0.99	0.05	−1.28	0.09	−3.93	0.12	0.28	0.06	−1.76	0.30
CAI 168	PUC	4.80	0.06	10.49	0.14	−0.68	0.08	1.63	0.06	0.04	0.11
CAI 170	PC	3.54	0.06	7.88	0.06	−0.11	0.08	-	-	−0.51	0.28
CAI 171	PC	3.04	0.04	6.69	0.08	−4.70	0.08	-	-	−0.56	0.22
CAI 172	PC	4.02	0.06	8.81	0.12	−0.31	0.23	-	-	−0.31	0.28
CAI 173	PC	−0.54	0.05	0.08	0.06	4.10	0.08	0.31	0.06	−0.61	0.28
CAI 174	PC	4.35	0.07	9.51	0.11	−0.09	0.08	-	-	−0.23	0.11
CAI 175	PC	−1.28	0.09	−2.22	0.20	−1.40	0.08	0.22	0.06	−1.45	0.22
Bulk Allende	-	−0.15	0.09	−0.28	0.22	0.55	0.11	0.242	0.073	−0.45	0.11
BHVO-2	-	-	-	-	-	0.90	0.08	0.19	0.10	-	-
BCR-2	-	−0.05	0.07	−0.09	0.11	-	-	0.26	0.06	−0.27	0.19

The uncertainties shown represent the 2SD of replicate sample analyses or the external reproducibilities (2SD) of the method. Data from the literature is shown in italics: bulk CAI Ni data is from Render et al. (2018), bulk Allende Ni data is from Gall et al. (2017), and bulk Allende Ca data is from Simon et al. (2017). Uranium isotope compositions of bulk CAIs are from Brennecka et al. (2010) and are corrected for the updated SRM950a standard value (²³⁸U/²³⁵U = 137.837) (Richter et al., 2010).

Px = pyroxene, Plag = plagioclase, ND = new digestion, PUC = previously experienced only uranium ion chromatography, PC = previous ion chromatography. Note that for all samples listed in this table uranium chemistry was done first after the initial digestion.