Supergene (geology) - Wikipedia
Supergene enrichment occurs at the base of the oxidized portion of an ore deposit. Metals that have been leached from the oxidized ore are carried downward by percolating groundwater, and react with hypogene sulfides at the supergene-hypogene boundary.
In the traditional view, supergene ore and gangue minerals are the products of reactions between hypogene sulfide minerals and descending, acidic meteoric waters; these processes take place at or near the ground surface in subaerial environments (Guilbert and Park, 1986).
Supergene sulfide enrichment | Ore Deposits, Hydrothermal …
Supergene sulfide enrichment, in geology, natural upgrading of buried sulfide deposits by the secondary or subsequent deposition of metals that are dissolved as sulfates in waters percolating through the oxidized mineral zone near the surface. The ore …
(PDF) Supergene Enrichment - ResearchGate
2013年3月1日 · Enrichment in copper with malachite, azurite and supergene cuprite + Cu-sulphides +/- traces Bi +/- scheelite occur near surface, but Au and Cu values decrease downwards.
Supergene - SpringerLink
Supergene sulfide enrichment is the most common use for the term supergene. This enrichment develops below the water table by the deposition of dissolved metals in descending water. These secondary sulfides overlie primary sulfides which belong to the hypogene zone.
Supergene Process - an overview | ScienceDirect Topics
Supergene enrichment occurs at or near the base of the weathering profile developed over deep-seated sulfide deposits or rocks enriched in Ni, Cu, and Co.
Supergene - SpringerLink
2018年1月1日 · The phenomenon known as supergene enrichment refers to the secondary, in situ, accumulation of metals as a result of three essential processes: (1) the electrochemical oxidation of primary sulfides, oxides, or native metals (e.g., native copper Cu (0) to Cu (II)), (2) the transport of the released metals as soluble metal species (e.g., CuSO 40, ...
We propose that supergene enrichment in the Atacama region developed in two main stages. The main phase, caused by downward circulation of meteoric waters in a semi-arid setting, was active from 45 until ~9 Ma, with a last pulse ca. 5 Ma in the southern Atacama Desert.
Definition from Guilbert and Park, 1985: Supergene enrichment occurs when oxidizing acids dissolve metal ions from the “protore” and re-deposits it in more reducing, basic areas, i.e. below the...
The hyper-enrichment of silver through the aggregation of silver ...
2024年11月26日 · The Poshan Ag-Pb-Zn deposit (2533 t silver at 243 g/t; ref. 24) in the Qinling orogen (central China; Fig. 1a) is an important example of the hyper-enrichment of silver that produces ores of ...