Table 3.

The ε⁵⁰Ti and ε⁵⁴Cr values of the meteorite samples studied here, as well as of the Smithsonian Allende reference powder and the BCR-2 and DTS-1 terrestrial rock standards analyzed during the same analytical sessions as the meteorite samples. The reported error is either the internal error (2SE) based on the number of analyses (n) of each sample solution or the external reproducibility (2SD), whichever is larger.

Sample	Classification	ε50Ti	n	ε54Cr	n
EET 83226	C2-ung	4.25 ± 0.15	6	0.93 ± 0.13	6
EET 83355	C2-ung	3.11 ± 0.15	3	0.76 ± 0.13	6
MAC 87300	C2-ung	4.67 ± 0.15	3	0.71 ± 0.14	6
NWA 5958	C2-ung	3.34 ± 0.15	5	1.18 ± 0.16	6
LEW 85332	C3-ung	2.42 ± 0.15	3	1.23 ± 0.13	6
MAC 88107	C3-ung	3.03 ± 0.15	6	1.11 ± 0.15	6
MAC 87301	C3-ung	4.12 ± 0.15	3	0.83 ± 0.14	6
Coolidge	C4-ung	2.67 ± 0.15	6	0.59 ± 0.13	6
LAP 04757	Chondrite-ung	−0.19 ± 0.15	1	−0.33 ± 0.13	6
LAP 04773	Chondrite-ung	−0.54 ± 0.15	3	−0.46 ± 0.16	6
GRO 95566	CM-an	3.50 ± 0.15	3	0.92 ± 0.13	3
Aguas Zarcas A1	CM2	2.21 ± 0.18	6	0.98 ± 0.13	6
Aguas Zarcas B1	CM2	2.86 ± 0.23	6	0.88 ± 0.13	6
Murchison	CM2	2.81 ± 0.15	5	1.10 ± 0.15	6
Murray	CM2	2.67 ± 0.15	6	0.84 ± 0.13	6
Isna	CO3.8	2.83 ± 0.15	6	0.66 ± 0.14	6
Allende	CV3	–	–	0.87 ± 0.13	6
Allende	CV3	–	–	0.94 ± 0.13	11
DTS-1	Ter. Std.	–	–	0.06 ± 0.13	6
BCR-2	Ter. Std.	−0.04 ± 0.15	5	–	–
BCR-2	Ter. Std.	−0.03 ± 0.17	6	–	–

¹Aguas Zarcas A is from the less altered lithology and Aguas Zarcas B is from the more altered lithology.