what is the formation of ores and its enrichment?
indianmahadev:
ores are formed by metamorphic reactions
during shearing
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Ores deposit formed by lateral secretion areformed by metamorphic reaction duringshearing which liberate minerals consecuents such as quartz ,sulfides ,gold ,carbonates and oxide from deforming rocks
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Sedimentary manganese deposits, especially those formed as a result of submarine volcanism, must also be secondarily enriched before they become ores.
Most non-ferrous sulfides are formed abiotically but some sedimentary deposits are of biogenic origin. Sulfate reducing bacteria play an important role in some sedimentary environments promoting the formation of certain sulfide minerals, especially iron pyrite (FeS2).
In ore deposit geology, supergene processes or enrichment are those that occur relatively near the surface as opposed to deep hypogene processes. ... The descending meteoric waters oxidize the primary (hypogene) sulfide ore minerals and redistribute the metallic ore elements.
Most non-ferrous sulfides are formed abiotically but some sedimentary deposits are of biogenic origin. Sulfate reducing bacteria play an important role in some sedimentary environments promoting the formation of certain sulfide minerals, especially iron pyrite (FeS2).
In ore deposit geology, supergene processes or enrichment are those that occur relatively near the surface as opposed to deep hypogene processes. ... The descending meteoric waters oxidize the primary (hypogene) sulfide ore minerals and redistribute the metallic ore elements.
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