Supplementary data 6. Whole-rock major element oxides (wt.%) and trace element compositions (ppm) of selected samples from the Xiaohekou complex
Sample	XH32-4	XH33-7	XH36-1	XH48-2	06XH03-2	06XH01-1	XH11-1	XH25-1	XH22-2	06XH02-7	XH30-1	XH33-3	XH40-5	XH10-3	XH11-5	XH13-5	
Rock type	Pyroxenite	Norite	Gabbronorite	Olivine gabbronorite dyke	
SiO2	52.28	50.17	52.28	50.71	48.74	50.88	51.79	49.15	47.55	55.51	46.78	47.75	47.31	49.46	48.19	46.40	
TiO2	0.84	0.82	0.69	1.17	0.65	0.86	0.94	0.70	2.07	0.64	2.19	2.22	1.81	1.18	0.51	0.68	
Al2O3	6.13	4.93	5.13	9.24	7.84	4.36	5.21	5.14	13.12	9.42	12.89	12.70	11.79	15.29	15.57	12.88	
Fe2O3	1.84	2.62	1.32	1.82	2.36	2.20	2.08	2.64	4.80	2.14	4.96	5.05	4.29	2.96	1.31	1.88	
FeO	7.70	8.60	9.80	8.20	7.47	9.98	9.35	7.95	8.45	6.00	8.85	8.45	8.20	6.60	7.70	9.57	
MnO	0.19	0.18	0.20	0.18	0.20	0.27	0.23	0.19	0.19	0.17	0.19	0.19	0.17	0.14	0.13	0.17	
MgO	15.62	18.76	18.06	14.79	16.47	18.15	18.02	19.28	8.70	11.58	8.90	9.15	9.19	9.20	12.51	14.42	
CaO	12.54	10.89	9.28	9.10	12.02	9.77	9.26	11.37	9.31	8.23	9.47	9.72	11.22	10.60	9.74	9.59	
Na2O	0.92	0.68	0.73	1.44	1.57	0.99	0.82	0.86	2.53	2.37	2.32	2.16	2.18	2.22	2.21	1.82	
K2O	0.49	0.55	0.39	1.34	0.45	0.39	0.50	0.52	0.90	1.71	0.57	0.38	0.72	0.43	0.38	0.33	
P2O5	0.12	0.06	0.04	0.24	0.09	0.09	0.10	0.10	1.26	0.25	1.32	1.21	1.86	0.26	0.08	0.49	
H2O+	0.79	1.26	1.37	1.29	1.38	1.44	1.10	1.44	0.70	1.31	1.04	0.65	0.87	1.07	1.03	1.05	
CO2	0.33	0.28	0.52	0.19	0.54	0.42	0.39	0.42	0.08	0.34	0.23	0.08	0.11	0.29	0.33	0.42	
Total	99.79	99.80	99.81	99.71	99.78	99.80	99.79	99.76	99.66	99.67	99.71	99.71	99.72	99.70	99.69	99.70	
Sc	52.7	46.2	41.6		41.2	43.6	42.1	45.5		30.6	28.5	34.1	31.5	28.6	18.0	21.7	
V	182	179	172		154	197	187	167		108	306	342	314	216	81.0	119	
Cr	808	1344	1475		948	1364	1469	1226		849	261	230	146	276	322	363	
Co	65.8	87.4	72.9		74.2	67.0	63.0	75.7		46.4	55.7	56.7	58.7	54.2	71.3	85.7	
Ni	370	435	501		461	386	380	536		297	134	123	145	191	576	485	
Cu	102	70.5	23.5		83.0	25.4	17.8	27.4		9.37	56.2	64.0	86.9	108	38.6	53.8	
Zn	81.7	86.3	95.5		78.2	106	104	91.5		99.5	134	144	119	79.0	72.8	97.7	
Ga	10.7	9.08	9.62		10.5	9.62	10.2	8.98		12.9	19.5	20.7	18.4	17.5	13.8	13.2	
Rb	12.0	18.9	11.6		10.5	11.5	12.4	12.7		44.6	10.4	5.08	13.6	6.36	4.39	3.75	
Sr	275	110	160		476	112	208	226		569	1027	1143	913	1102	1084	946	
Y	25.0	19.8	16.1		17.8	17.2	18.0	20.3		21.5	25.8	29.6	36.7	15.2	9.4	14.1	
Zr	85.6	63.8	56.1		71.4	54.9	60.3	74.3		56.0	46.8	57.6	67.5	36.4	27.9	29.3	
Nb	2.88	2.27	2.27		2.21	2.60	3.40	3.19		5.90	6.64	8.44	10.7	2.23	1.52	1.56	
Mo	0.20	0.12	0.33		0.41	0.61	0.27	0.33		0.54	0.30	0.20	0.26	0.22	0.19	0.13	
Sn	0.88	0.78	0.61		0.73	0.65	0.70	0.76		0.70	1.01	1.30	1.55	0.67	0.35	0.45	
Cs	0.70	1.50	1.10		0.71	0.77	0.68	0.66		1.16	0.51	0.15	0.45	0.58	0.71	0.62	
Ba	176	284	136		273	147	242	203		1214	461	413	489	289	268	229	
La	14.9	10.5	9.3		13.9	11.7	11.9	14.0		37.4	37.7	46.2	69.0	13.4	8.16	14.2	
Ce	39.4	27.9	22.2		33.7	28.4	28.7	35.2		78.4	85.2	104	150	29.9	18.0	32.8	
Pr	6.04	4.22	3.12		4.84	4.06	4.10	5.06		9.74	10.88	12.55	18.16	4.19	2.45	4.52	
Nd	28.6	20.9	15.1		23.0	19.4	20.3	25.1		38.6	48.4	55.0	75.3	19.8	12.4	21.9	
Supplementary data 6. Continued
Sample	XH32-4	XH33-7	XH36-1	XH48-2	06XH03-2	06XH01-1	XH11-1	XH25-1	XH22-2	06XH02-7	XH30-1	XH33-3	XH40-5	XH10-3	XH11-5	XH13-5	
Rock type	Pyroxenite	Norite	Gabbronorite	Olivine gabbronorite dyke	
Sm	7.11	5.35	3.97		5.42	4.91	5.16	6.00		7.00	9.62	10.7	14.0	4.95	3.07	5.01	
Eu	1.83	1.38	1.07		1.44	1.20	1.28	1.42		1.61	2.49	2.58	3.16	1.66	1.26	1.59	
Gd	6.30	4.86	3.74		4.87	4.72	4.54	5.26		5.84	7.79	8.58	11.15	4.16	2.63	4.27	
Tb	0.92	0.75	0.59		0.71	0.66	0.69	0.77		0.79	1.04	1.17	1.50	0.61	0.39	0.60	
Dy	5.03	4.09	3.20		3.78	3.48	3.92	4.42		4.25	5.26	5.92	7.40	3.35	2.21	3.18	
Ho	0.93	0.74	0.60		0.74	0.69	0.67	0.80		0.81	0.94	1.09	1.31	0.58	0.35	0.52	
Er	2.24	1.88	1.58		1.83	1.74	1.75	1.95		2.12	2.24	2.58	3.26	1.41	0.89	1.27	
Tm	0.33	0.26	0.23		0.25	0.24	0.23	0.25		0.30	0.30	0.36	0.42	0.19	0.10	0.15	
Yb	1.97	1.44	1.28		1.55	1.58	1.45	1.57		2.01	1.66	2.01	2.47	1.12	0.68	0.96	
Lu	0.28	0.23	0.19		0.21	0.23	0.21	0.22		0.31	0.25	0.30	0.35	0.18	0.10	0.13	
Hf	2.65	2.19	1.80		2.31	1.87	1.88	2.34		1.94	1.42	1.72	2.07	1.23	0.91	1.01	
Ta	0.16	0.15	0.14		0.14	0.18	0.22	0.20		0.49	0.39	0.48	0.53	0.14	0.09	0.10	
Pb	4.42	11.0	4.38		13.4	9.16	14.9	27.2		14.5	4.94	5.24	5.03	23.5	11.6	14.2	
Th	1.04	1.18	1.21		1.24	1.44	1.61	1.40		4.51	1.69	1.34	1.74	0.49	0.31	0.41	
U	0.22	0.2	0.20		0.16	0.21	0.27	0.26		1.56	0.27	0.22	0.30	0.09	0.06	0.08	
Sample	XH20-1	XH12-1	XH12-1#	06XH01-2	06XH02-3	XH44-5	XH45-4	06XH03-1	XH03-6	XH49-1	XH37-1	XH35-1	XH32-2	06XH02-2	XH34-1	XH34-1#	
Rock type	Gabbro	First group of leucogabbro	Second group of leucogabbro	Diorite	Monzonite	Quartz monzonite	
SiO2	48.23	46.07		47.73	46.93	47.25	50.31	52.01	53.16	55.16	56.42	59.17	58.11	60.29	64.66		
TiO2	1.29	2.11		1.33	2.06	2.13	2.03	0.43	0.47	0.56	0.97	1.19	1.26	1.14	0.64		
Al2O3	18.86	11.91		18.92	15.15	15.16	16.31	19.49	16.52	12.92	16.35	15.45	15.58	15.16	16.01		
Fe2O3	3.35	5.41		3.66	5.41	5.51	5.28	1.12	0.85	1.30	2.62	1.80	2.15	1.93	1.82		
FeO	5.23	8.60		4.92	7.75	7.67	5.25	3.95	5.30	7.10	4.70	4.70	4.85	4.35	2.55		
MnO	0.11	0.21		0.11	0.19	0.16	0.14	0.09	0.11	0.20	0.11	0.10	0.11	0.10	0.07		
MgO	6.12	9.50		5.59	6.93	6.77	5.22	6.98	8.71	9.63	4.83	3.74	4.19	3.46	1.81		
CaO	11.12	9.49		10.96	9.15	9.25	8.09	10.13	10.82	8.08	7.18	5.05	5.63	4.83	3.57		
Na2O	2.83	2.16		2.77	2.65	2.59	2.92	3.07	2.31	2.70	3.76	3.82	3.54	3.66	4.10		
K2O	0.80	0.53		0.89	1.74	1.72	2.21	0.83	0.59	0.69	1.42	3.67	3.24	3.55	3.48		
P2O5	0.37	1.28		0.33	0.30	0.31	1.04	0.10	0.07	0.36	0.41	0.47	0.50	0.42	0.22		
H2O+	1.25	2.36		2.18	1.26	0.85	0.70	1.28	0.73	0.94	0.84	0.41	0.40	0.66	0.67		
CO2	0.10	0.10		0.29	0.15	0.04	0.04	0.22	0.08	0.11	0.09	0.09	0.09	0.15	0.06		
Total	99.66	99.73		99.68	99.67	99.40	99.54	99.70	99.72	99.75	99.70	99.66	99.65	99.70	99.66		
Sc	23.7	28.7	28.5	25.6	27.0	21.7	20.3	17.6	28.8		18.0	15.6	16.6	14.1	9.11	8.95	
V	215	309	298	180	321	321	220	75.8	107		139	143	144	122	72.6	73.1	
Cr	78.0	265	262	63.8	125	85.3	103	157	116		67.8	122	142	108	20.8	20.7	
Supplementary data 6. Continued
Sample	XH20-1	XH12-1	XH12-1#	06XH01-2	06XH02-3	XH44-5	XH45-4	06XH03-1	XH03-6	XH49-1	XH37-1	XH35-1	XH32-2	06XH02-2	XH34-1	XH34-1#	
Rock type	Gabbro	First group of leucogabbro	Second group of leucogabbro	Diorite	Monzonite	Quartz monzonite	
Co	42.2	53.2	53.8	36.0	55.8	67.7	49.9	35.4	39.9		33.9	23.7	25.3	20.5	12.2	12.5	
Ni	64.4	127	128	46.8	81.22	65.8	65.3	175	90.1		81.5	55.7	57.0	47.6	10.9	10.6	
Cu	51.1	79.2	75.5	52.4	70.4	70.7	41.0	91.2	64.6		59.3	22.3	26.0	24.8	11.4	11.8	
Zn	64.2	99.8	100	48.7	101	101	117	44.2	54.9		89.6	90.4	90.7	80.1	66.7	65.5	
Ga	20.9	18.4	18.3	19.8	20.4	19.8	21.9	17.3	16.8		21.5	22.6	21.3	21.5	21.4	21.5	
Rb	14.1	13.6	13.2	17.8	40.5	42.9	58.3	15.8	10.9		25.0	113	83.6	99.8	65.0	63.1	
Sr	1388	947	952	1397	969	1021	1214	1401	1178		1114	699	729	629	673	702	
Y	16.1	24.9	24.5	17.3	21.8	18.7	27.2	8.71	12.6		18.3	28.3	26.5	23.3	19.2	19.0	
Zr	57.2	45.2	45.2	22.8	90.4	57.2	80.5	57.0	47.5		77.3	177	128	150	159	147	
Nb	3.42	7.16	6.61	0.23	12.4	5.99	13.7	2.95	2.05		7.72	22.1	19.5	20.2	9.75	9.86	
Mo	0.16	0.97	0.29	0.11	0.68		0.61	0.89	0.17		0.21	1.66	1.09	2.03	0.27	0.50	
Sn	0.90	1.39	1.35	0.21	1.61	1.01	1.35	0.50	0.53		0.97	2.15	1.84	1.96	1.21	1.17	
Cs	0.49	0.68	0.71	1.01	0.69	0.82	1.08	0.57	0.26		0.55	2.11	1.43	1.84	0.64	0.65	
Ba	603	383	374	608	849	1290	2152	530	394		865	1641	1642	1543	1780	1783	
La	21.7	37.8	37.1	23.2	27.6	22.2	58.4	16.4	14.2		40.5	76.6	68.0	70.8	51.9	53.2	
Ce	44.8	87.6	83.7	49.7	60.0	48.4	119	30.3	28.8		79.9	145	128	136	97.2	102	
Pr	5.72	11.0	10.62	6.72	7.74	6.38	14.5	3.56	3.72		9.34	15.4	14.1	14.1	10.6	10.9	
Nd	25.9	47.0	46.8	29.5	33.3	27.2	59.3	13.9	16.2		38.0	58.5	53.2	51.7	39.3	40.2	
Sm	5.67	9.01	9.40	6.10	7.01	6.03	10.9	2.74	3.57		6.99	9.82	9.44	8.31	6.56	6.45	
Eu	1.80	2.24	2.23	1.99	2.06	1.83	2.90	1.18	1.32		2.01	2.34	2.36	2.20	1.69	1.60	
Gd	4.71	7.80	7.46	5.16	6.06	5.13	8.52	2.36	3.21		5.22	7.63	7.38	6.77	4.85	4.91	
Tb	0.65	1.01	0.98	0.73	0.86	0.66	1.11	0.34	0.47		0.71	1.04	0.99	0.89	0.68	0.68	
Dy	3.48	5.19	5.20	3.79	4.43	3.75	5.59	1.84	2.46		3.75	5.49	5.07	4.51	3.52	3.49	
Ho	0.62	0.91	0.91	0.71	0.82	0.73	0.98	0.34	0.47		0.65	0.99	0.93	0.87	0.67	0.63	
Er	1.51	2.30	2.24	1.83	2.18	1.70	2.47	0.89	1.16		1.69	2.61	2.40	2.18	1.74	1.84	
Tm	0.19	0.30	0.28	0.22	0.30	0.25	0.34	0.12	0.15		0.23	0.39	0.34	0.31	0.26	0.25	
Yb	1.16	1.82	1.79	1.30	1.76	1.52	2.00	0.82	1.03		1.44	2.10	2.01	1.90	1.70	1.64	
Lu	0.16	0.26	0.25	0.20	0.30	0.22	0.28	0.11	0.15		0.21	0.34	0.32	0.31	0.25	0.24	
Hf	1.70	1.47	1.41	0.86	2.69	1.77	2.22	1.53	1.46		2.11	4.30	3.35	3.76	3.95	3.71	
Ta	0.18	0.40	0.38	0.01	0.65	0.33	0.73	0.18	0.12		0.35	1.25	1.07	1.15	0.50	0.52	
Pb	37.0	14.5	10.8	19.4	13.3	4.64	9.10	13.9	4.43		14.7	22.4	19.9	22.3	25.9	26.0	
Th	1.10	1.26	1.24	0.53	1.67	2.09	5.09	1.72	1.09		2.49	11.3	8.26	11.6	5.96	6.04	
U	0.15	0.34	0.33	0.11	0.28	0.45	1.20	0.27	0.15		0.33	1.86	1.28	1.58	0.79	0.79	
#, duplicate samples for trace element analyses.