Supplementary data 3. Compositions (wt.%) of hornblende from selected samples in the Xiaohekou complex
Rock type/Sample number	SiO2	TiO2	Al2O3	FeO	MnO	MgO	CaO	Na2O	K2O	Cr2O3	Total	P*/GPa	
Pyroxenite/06XH03-2	42.72	3.13	11.33	9.38	0.07	15.70	11.70	2.58	1.20	0.23	98.04	0.62	
	43.04	0.62	12.81	10.25	0.08	16.21	11.23	2.73	1.00	0.06	98.03	0.73	
Pyroxenite/XH20-2	43.99	2.05	10.29	11.17	0.10	14.23	11.23	2.21	0.70	0.03	96.00	0.55	
	44.88	1.52	9.93	11.21	0.13	14.53	11.46	1.94	0.74	0.02	96.36	0.52	
Hb gabbro pegmatite/XH24	41.72	3.49	12.50	11.75	0.10	12.90	11.49	2.19	1.45	0.01	97.60	0.74	
	41.17	4.48	12.37	11.64	0.11	12.48	11.42	2.27	1.40	0.03	97.37	0.73	
Leucogabbro/06XH03-1	42.62	2.79	12.04	11.73	N.A.†	12.79	12.02	1.72	1.21	N.A.	96.92	0.70	
Monzonite/XH32-2	45.48	2.13	8.23	13.59	0.17	13.44	10.97	1.60	1.37	0.05	97.03	0.38	
Dioritic enclave in gabbro	49.13	0.89	6.46	11.74	N.A.	15.37	11.93	0.93	0.48	N.A.	96.93	0.22	
*Crystallization pressure calculated by using the Al-in-hornblende geobarometer of Schmidt (1992).
†N.A. = not analyzed.