Metasomatic Origin of Quartz-Pyroxene Rock, Akilia, Greenland, and Implications for Earth's Earliest Life Christopher M. Fedo and Martin J. Whitehouse

Major element data

	AK02	AK03	AK04	AK05	AK09	AK10	AK44	AK38	AK12	AK31	AK36	AK41	AK42	AK46
	u/mafic	u/mafic	u/mafic	u/mafic	boudin	boudin	boudin	layer	qtz-px.	qtz-px.	qtz-px.	qtz-px.	qtz-px.	qtz-px.
SiO2	48.74	47.6	49.61	47.97	49.94	50.1	54.74	48.47	63.52	95.56	77.64	95.5	78.64	72.91
Al2O3	7.35	7.99	6.94	8.95	1.27	0.83	1.44	4.58	0.16	0.55	0.47	0.45	0.41	0.49
Fe2O3(T)	11.68	11.95	12.19	12.92	28.26	23.58	27.06	21.75	26.74	1.61	11.45	2.25	11.15	12.59
MnO	0.177	0.186	0.179	0.219	0.512	0.458	0.614	0.355	0.319	0.023	0.226	0.054	0.202	0.367
MgO	22.35	21.67	21.53	16.55	11.19	9.68	12.94	10.12	5.04	0.82	3.85	0.65	3.67	5.39
CaO	6.46	6.67	5.34	9.59	8	14.68	2.33	11.64	4.47	0.97	5.61	0.82	5.58	7.55
Na2O	1.21	1.28	1.13	1.48	0.42	0.44	0.47	0.87	0.32	0.35	0.36	0.38	0.32	0.4
K2O	0.1	0.14	0.47	0.11	0.04	0.02	0.14	0.21	0.03	-0.01	0.01	-0.01	0.06	-0.01
TiO2	0.283	0.361	0.299	0.398	0.265	0.024	0.076	0.274	0.004	0.023	0.004	-0.001	-0.001	0.008
P2O5	0.04	0.03	0.03	0.03	0.31	0.05	0.07	0.05	0.02	0.02	0.02	0.02	0.03	0.02
LOI	1.6	2.2	1.9	1.4	-0.1	0.0	-0.2	1.6	-0.9	0.2	-0.1	0.1	-0.1	0.0
TOTAL	99.95	100.1	99.63	99.59	100.07	99.89	99.7	99.89	99.76	100.11	99.58	100.25	99.97	99.68

Selected trace element data

La	1.08	1.36	1.41	3.42	8.18	3.32	2.58	4.06	1.12	0.38	0.77	0.34	1.24	1.76
Ce	2.86	3.19	3.83	8.04	23.32	10.06	7.97	14.82	3.18	1.22	2.99	0.79	3.13	5.28
Pr	0.44	0.44	0.51	0.86	3.36	1.35	1.13	2.08	0.36	0.21	0.48	0.09	0.39	0.78
Nd	2.41	2.22	2.41	3.58	17.56	6.23	5.57	9.44	1.34	1.12	2.28	0.32	1.63	3.56
Sm	0.88	0.80	0.76	1.11	4.85	1.44	1.45	2.47	0.23	0.34	0.60	0.08	0.35	0.90
Eu	0.47	0.47	0.32	0.45	0.42	0.40	0.12	1.07	0.10	0.03	0.18	0.05	0.20	0.23
Gd	1.26	1.16	1.08	1.53	5.02	1.46	1.52	2.74	0.26	0.37	0.60	0.11	0.42	1.06
Tb	0.24	0.23	0.21	0.29	0.79	0.24	0.25	0.46	0.04	0.06	0.10	0.02	0.07	0.17
Dy	1.54	1.55	1.43	1.98	4.42	1.45	1.55	2.74	0.29	0.33	0.62	0.12	0.47	1.10
Ho	0.32	0.32	0.29	0.40	0.82	0.30	0.31	0.54	0.07	0.06	0.12	0.03	0.10	0.22
Er	0.99	0.96	0.87	1.22	2.33	0.86	0.99	1.64	0.20	0.18	0.35	0.07	0.29	0.65
Tm	0.15	0.14	0.14	0.19	0.34	0.14	0.17	0.24	0.03	0.03	0.05	0.01	0.04	0.10
Yb	0.88	0.90	0.85	1.17	1.99	0.88	1.10	1.59	0.18	0.15	0.34	0.07	0.28	0.62
Lu	0.14	0.14	0.13	0.17	0.28	0.13	0.17	0.23	0.03	0.02	0.05	0.01	0.04	0.10
Y	9.65	8.96	8.49	12.46	24.96	10.13	9.45	17.07	2.41	1.81	3.89	0.97	3.81	7.68
Zr	19.2	23.2	21.0	31.6	14.2	9.8	11.3	16.0	8.5	9.3	5.9	2.8	4.5	7.1
Th	1.44	0.63	0.28	0.38	0.77	0.07	0.11	0.11	0.19	0.13	0.12	0.09	0.12	0.15
Cr (INAA)	3600	3400	3400	2100	86	31	68	2200	15	29	5.7	6.2	4.6	32
Sc (INAA)	25.7	34.5	28.7	33.5	45.6	2.5	21.5	20.1	0.3	2.6	0.5	0.3	0.6	2.3

Derived parameters¹

(Pr/Pr*)SN	0.93	0.95	0.96	0.94	0.94	0.99	0.97	1.01	1.04	0.99	1.04	1.07	1.02	1.03
(Ce/Ce*)SN	0.92	0.94	1.02	1.08	0.99	1.05	1.02	1.09	1.13	0.91	1.01	1.02	1.02	0.99
(Eu/Eu*)CN	1.35	1.50	1.08	1.04	0.26	0.83	0.25	1.25	1.25	0.25	0.91	1.61	1.57	0.73

Notes:
All data produced under contract by Activation Laboratories Ltd., Canada: major elements by ICP-OES, trace elements by ICP-MS (unless stated INAA).
(1) CN = chondrite normalised (ref. 39); SN = shale normalised (ref. 22)