. Author manuscript; available in PMC: 2017 Nov 16.

Published in final edited form as: Geochim Cosmochim Acta. 2016 Jan 28;201:320–330. doi: 10.1016/j.gca.2016.01.012

Table 1.

Concentrations of radiogenic ^129*Xe, ^131*Xe and ^128*Xe, trapped ¹³²Xe, and U-fission ¹³²Xe in Gujba and HH 237 chondrules.

		^129*Xe	^128*Xe^b	¹³¹*Xe	¹³²Xe
					Trapped	U-fission

		×10⁻¹⁰ cm³STP/g^a
Gujba	C1	<0.001	0.54	8.0	7.8	0.02
	C2	<0.002	8.7	1.6	0.16	0.03
	C4	<0.001	0.28	0.39	0.10	0.01
	C5	<0.001	2.30	2.84	0.9	0.12
HH237	C1	31.1	57.4	8.6	9.8	0.1
HH237	C3	0.013	2.6	2.6	0.7	0.1

All concentrations should be considered lower limits since iodine- and uranium-bearing phases most probably constitute for only a part of the each studied chondrule fragment.

Concentrations for ^128*Xe shown for all extraction steps, with an exception of the first one (800 °C), to minimize contributions from ^128*Xe associated with the superficial iodine contamination.