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kobusy [5.1K]
3 years ago
10

Most metallic ores are produced by which two types of processes? metamorphic and sedimentary igneous and metamorphic igneous and

sedimentary cementation and compaction
Geography
2 answers:
Paul [167]3 years ago
5 0
Igneous and metamorphic. mainly igneous.
inysia [295]3 years ago
3 0

<u>Answer: </u>

Metallic ores are produced by igneous and metamorphic processes.

<u>Explanation: </u>

  • Metallic ores are present in every type of rock and few varieties of soil. These get concentrated into "rich masses by igneous, metamorphic processes". Metals precipitate as sulphide minerals in a cooling body of magma.
  • Magmatic deposits occur when the "minerals settle to the bottom" and form layers. Metamorphic deposits rich in copper, cobalt, lead, zinc from hot solutions circulate through the rocks.
  • The solutions come from heated meteoric water. Constant changing pressures result in precipitation of sulphides or pure metal like gold, copper, silver.
  • This process is repeated again and again until the systems are filled with mineral deposits.
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