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Author Question: Which two minerals define a felsic composition? A) Pyroxene and amphibole B) Muscovite and ... (Read 66 times)

jman1234

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on: Jul 16, 2018
Which two minerals define a felsic composition?
 
  A) Pyroxene and amphibole
  B) Muscovite and biotite micas
  C) Quartz and potassium feldspar
  D) Plagioclase feldspar and biotite mica

Question 2

Peridotite is the main constituent of which part of the Earth?
 
  A) Crust
  B) Magma chambers
  C) Rift zones
  D) Upper mantle


kjohnson

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: D


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