Research Article
Identification of Two Types of Metallogenic Fluids in the Ultra-Large Huize Pb–Zn Deposit, SW China
Table 3
Characteristics of the two fluid types in the Huize Pb–Zn deposit, SW China.
| | | Fluid A | Fluid B | Mixed fluid |
| | Source | Deep | Brine water from atmospheric Precipitation leaching the host rock | Mixed A and B | | Salinity | <10 wt% NaCl | >20 wt% NaCl | 2–23 wt% NaCl | | pH | <3.6 | >6 | 5–8 | | CO2 | Abundant | Abundant | First increased, then decreased | | 70 ppm | No | No | | HS− | No | Sulfate strata reduction | Precipitated as sulfides | | Pb, Zn complex | Cl-complex | Little or none | Sulfide precipitation | | δ13C | | | | | δD | | | | | δ18O | | | | | Property | Acid oxidation | Neutral-alkaline and reducing | Near neutral | | Corresponding major minerals | Barite and sphalerite in I stage | Calcite in IV stage | Galena, sphalerite in II and III stages |
|
|
