Fluid Evolution of Fuzishan Skarn Cu-Mo Deposit from the Edong District in the Middle-Lower Yangtze River Metallogenic Belt of China: Evidence from Petrography, Mineral Assemblages, and Fluid Inclusions

Figure 8

Photomicrographs of representative fluid inclusions in the Fuzishan Cu-Mo deposit. (a) A fluid inclusion assemblage including S₁-, S₂-, L_V-, V_L-, and V-type inclusions in garnet of the prograde skarn stage. (b) A typical S₁-type inclusion containing multiple daughter minerals in garnet of the prograde skarn stage. (c) S₁-type inclusion in diopside of the prograde skarn stage. (d) Coexisting S₁- and V_L-type inclusions in the cubic diopside of the prograde skarn stage. (e) A fluid inclusion assemblage comprising S₂-, L_V-, V-type inclusions in epidote of the retrograde skarn stage. (f) A typical S₂-type inclusion in epidote of the retrograde skarn stage. (g) S₂-type inclusion in epidote of the retrograde skarn stage containing dark opaque daughter mineral, possibly being sulfide. (h) Coexistence of L_V-, L-, V-, and V_L-type inclusions in quartz of the quartz-sulfide stage. (i) Coexisting L_V- and V-type inclusions in calcite of the quartz-sulfide stage. (j) V_L and secondary fluid inclusions of the late anhydrite of the quartz-sulfide stage. (k) L_V-type inclusions in calcite of the carbonate stage. Cpy: chalcopyrite; Mol: molybdenite; Hem: hematite; Cal: calcite; Adr: anhydrite; H: halite.

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