Fluid Inclusion and Oxygen Isotope Constraints on the Origin and Hydrothermal Evolution of the Haisugou Porphyry Mo Deposit in the Northern Xilamulun District, NE China

Table 3

Summary of oxygen isotope data of igneous and hydrothermal minerals in Haisugou.

Sample number	Measured mineral	Measured δ^18; ()	Crystallization temperature; (°C)	Calculated δ^18; ()
Magmatic stage
HSG43	Hornblende in fresh granite	6.4	730	8.4
HSG03	Magmatic quartz in fresh granite	8.8	730	7.9
P-stage
HSG09-32	Vein quartz with no obvious sulfide	7.7	415	4.0
HSG09-08a	Barren quartz-K-feldspar vein	9.2	457	6.3
HSG09-04	Barren quartz-K-feldspar vein	7.5	416	3.8
HSG09-15	Weakly mineralized quartz vein with K-feldspar halo	7.9	453	4.9
HSG09-44	Quartz-molybdenite vein with K-feldspar halo	7.3	430	3.9
S-stage
HSG09-09a	Quartz-molybdenite hydrothermal breccias cemented by barren quartz	6.3	306	−0.4
HSG09-21	Coarse quartz-molybdenite-sericite vein	7.0	370	2.2
HSG09-25a	Quartz-molybdenite hydrothermal breccias cemented by barren quartz	3.7	335	−2.0
HSG09-34	Quartz-molybdenite-sericite vein	6.9	289	−0.4
HSG09-28	Quartz-molybdenite-sericite-chlorite vein	6.6	323	0.5
HSG09-27	Quartz-molybdenite-chalcopyrite vein with sericite halo	6.7	323	0.6
HSG09-08b	Quartz-molybdenite vein with sericite halo, cutting early quartz-K-feldspar vein	7.3	384	2.9
HSG09-40	Coarse quartz-molybdenite-sericite vein	7.5	323	1.4
B-stage
HSG09-09b	Barren quartz cementing quartz-molybdenite breccias	6.9	229	−3.1
HSG09-49	Barren quartz vein cutting quartz-molybdenite vein	6.0	224	−4.3
HSG09-25b	Barren quartz cementing quartz-molybdenite breccias	7.5	216	−3.2
HSG09-42	Quartz-calcite vein with little pyrite	5.7	223	−4.6
HSG09-50	Barren quartz-calcite vein cutting quartz-molybdenite vein	5.5	223	−4.8

Note. The crystallization temperatures of hydrothermal quartz samples are represented by the average homogenization temperatures of the fluid inclusion assemblages they host.