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Author Question: When considering hydrothermal deposits, vein- or fissure-filling deposits of metallic ores such as ... (Read 65 times)

karen

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  • Posts: 537
on: Jul 15, 2018
When considering hydrothermal deposits, vein- or fissure-filling deposits of metallic ores such as gold or silver are common in ________.
 
  A) rocks of a contact-metamorphic zone that formed around a shallow granite pluton
  B) pyroclastic materials erupted from a stratovolcano
  C) impact structures from meteorites
  D) rocks that form in high-pressure subduction zones

Question 2

The mineral bauxite is refined to produce ________ for economic use.
 
  A) iron
  B) aluminum
  C) copper
  D) gold


annierak

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Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: B


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