Geofluids / 2018 / Article / Tab 5

Research Article

Physiochemical Restrictions of Mineral Zoning of Sediment-Hosted Stratiform Copper Deposit in SW China

Table 5

Comparison of -, redox block, lithology, and mineral assembly.

Redox state blockThe area of approximate trapezoid under the (8), (11), and (12) balance lines and coordinate axisThe area of polygon under the (3), (13), (20), (8), (11), and (12) balance linesThe area of approximate triangle under the (5), (6), (7), (13), and (23) balance linesThe area of approximate trapezoid under (3), (5), (6), (7), and (23) balance lines and coordinate axis

Lithology (rock color)PurpleAmaranthPale red or light greyLight grey off-white
Cementing patterns of different type sandstonesFerruginous, calcium argillaceous, which contains a large quantity of hematite, calcite, dolomite, and clay mineral Ferruginous, calcium argillaceous, which contains a large quantity of hematite, calcite, dolomite, and clay mineral 
Copper sulfide mineral assemblage
Copper sulfide mineral assemblagePrincipal siliceous cementation which contains recrystallization, secondary overgrowing quartz/pyrite, etc.
Redox zoningStrong oxidizing zoneOxidizing zoneOxidizing-reducing transitive zoneReducing zone
Typical mineral assemblage
(the minerals marked by italic are the typical minerals for each zoning)
Iron and copper oxide such as hematite,
cuprite, and tenorite
Iron oxide + copper sulfide such as hematite, magnetite, and chalcociteIron oxide + copper sulfide such as hematite,
magnetite, bornite, and chalcopyrite
Iron and copper sulfide such as chalcopyrite, pyrrhotite, and pyrite

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