Genesis of the Bieyesamas Monzogranite of the Altay Mountain, Xinjiang, Northwestern China, and Its Rare Metal Resource Potential

Table 2

Lu-Hf isotopic analyses for zircons from the Bieyesamas monzogranite.

Spot	Age (Ma)	^176Yb/^177Hf	^176Lu/^177Hf	^176Hf/^177Hf	±2σ			(Ma)	(Ma)
3	453.6	0.087068	0.001983	0.282687	0.000022	0.28267	6.36	823	1035	-0.94
5	453.7	0.144953	0.003384	0.282707	0.000024	0.28268	6.66	826	1016	-0.90
7	451.2	0.140618	0.003152	0.282679	0.000028	0.28265	5.70	862	1076	-0.91
9	453.0	0.074174	0.001686	0.282586	0.000022	0.28257	2.89	961	1257	-0.95
10	462.5	0.142499	0.003241	0.282641	0.000023	0.28261	4.54	921	1159	-0.90
11	442.7	0.104983	0.002387	0.282734	0.000022	0.28271	7.69	763	941	-0.93
18	452.2	0.075751	0.001693	0.282659	0.000019	0.28264	5.45	856	1093	-0.95
21	465.0	0.178410	0.004099	0.282707	0.000028	0.28267	6.68	842	1024	-0.88
22	439.2	0.169210	0.003969	0.282688	0.000022	0.28266	5.55	867	1075	-0.88
24	449.0	0.137328	0.002971	0.282730	0.000025	0.28270	7.51	781	958	-0.91
25	465.0	0.097624	0.002168	0.282615	0.000027	0.28260	4.01	932	1195	-0.93
26	457.6	0.115284	0.002604	0.282700	0.000023	0.28268	6.73	818	1015	-0.92
28	443.0	0.122911	0.002749	0.282659	0.000022	0.28264	4.95	881	1117	-0.92

Annotation: , the one-stage model age; , the two-stage model age.