@Deznuts
I consider myself dyslexic in that field also but there are some simple points that we can observe.
Most deposits are 1.7 (90th percentile) to 130 (10th percentile) million tons; median deposit size is 15 million tons.
Deposit trace element geochemistry
Feeder or stockwork zone (Large, 1983; Lydon, 1983): iron, lead, and zinc (± gold, boron, and copper). Stratiform ore (Large, 1983; Lydon, 1983): lead, zinc (cadmium), with or without barium (zoned laterally outward from feeder zone (fig. 1). Iron may be enriched within and adjacent to the base-metal sulfide zone (Large, 1983); anomalous concentrations of silver ± arsenic and antimony in sulfosalt minerals (Cox and Curtis, 1977; Taylor and others, 1984) and manganese (outer halo) are also common (Maynard, 1981). Concentrations of mercury are high in some deposits, where it is primarily in pyrite, sphalerite, or sulfosalt minerals (Ryall, 1981).
Barite may be present. Numerous other sulfide and sulfosalt minerals have been reported in some deposits (Cox and Curtis, 1977; Large, 1983; Taylor and others, 1994). Relative abundances of major base-metal sulfide minerals vary among deposits and within deposits as a result of zonation. Large (1983) reports that lead-zinc ratios of ore range from approximately 1:1 (Mount Isa, Australia; Sullivan, British Columbia; and Tynagh, Ireland) to 1:8 (Meggen, Germany). The sequence of zonation is generally lead-zinc-(barium-copper) extending outward in laterally zoned deposits and zinc-lead (barium) extending upward in vertically zoned deposits (Large, 1983; Lydon, 1983).
Secondary zinc minerals are rare. Secondary sulfate minerals include jarosite, barite, and alunite. Native sulfur, produced by oxidation of marcasite, is present at Red Dog, Alaska (R.A. Zierenberg, written commun., 1995). Rock may be oxidized to 100 m below the surface (Australian examples), and may extend to 300 m adjacent to major faults and shear zones. Oxidation depth is controlled partly by fracture density near orebodies and presence of pyrrhotite, which is highly reactive with oxygenated ground water (Taylor and others, 1984).
After this, just go straight to pages 229, 230 and 231.
Hopefully this will help and avoid being so baffled.
Not long to wait now until that clarification and as @Seth Davis noted,
These leaks may in fact be true, and that is what I believe.
By the way, thanks MRAhmed Botic and I hope you don't get into too much trouble.
Kind regards, Wack.
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