Table 3. Mg isotope compositions of Main Group, pyroxene and ungrouped pallasites, as well as one primitive achondrite.

Sample	Groupa	μ25Mg	2se	μ26Mg*	2se	nb	27Al/24Mgc
Main group pallasites
Springwater	PMG	−120	3	−8.2	1.8	10	<0.0001
Philips Co (USNM1695)	PMG	−114	3	−15.0	1.6	10	<0.0001
Dora	PMG	−89	8	−10.1	1.0	10	0.00071
Fukang	PMG	−118	9	−12.6	1.6	10	<0.0001
Brahin	PMG	−83	7	−9.6	1.3	10	0.00004
Brenham	PMG	−116	6	−10.6	1.9	10	<0.0001
Molong	PMG	−113	4	−14.9	2.2	10	<0.0001
Giroux (USNM1574)	PMG	−113	3	−11.1	2.1	10	<0.0001
Krasnojarsk	PMG	−112	12	−9.3	1.7	10	<0.0001
Admire	PMG	−90	12	−10.5	1.5	10	<0.0001
Pyroxene pallasites
Yamato8451	PxP	−115	10	−14.6	2.3	10	0.00263
Vermillion	PxP	−129	13	−11.6	1.5	10	0.00126
Ungrouped pallasites
Milton (USNM7816)	Ung.	−97	5	1.6	1.1	10	<0.0001
Zinder	Ung.	−131	9	−11.5	1.6	10	<0.0001
Primitive achondrites
NWA 4478	Lodranite	−130	6	−9.7	1.4	10	0.00740

^aPMG = Main Group Pallasite, PxP = Pyroxene Pallasite, Ung. = Ungrouped Pallasite.

^bNumber of measurements.

^c27Al/²⁴Mg ratios are accurate to within 2%.