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Author Question: Why do felsic rocks typically have the lightest color? A) They contain olivine and pyroxene. B) ... (Read 118 times)

leilurhhh

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on: Jul 16, 2018
Why do felsic rocks typically have the lightest color?
 
  A) They contain olivine and pyroxene.
  B) They contain pyroxene, amphibole, and plagioclase feldspar.
  C) They contain quartz, mica, amphibole, sodium-rich plagioclase feldspar, and potassium feldspar.
  D) They contain olivine, pyroxene, and calcium-rich plagioclase feldspar.

Question 2

What type of crystal texture is formed when magma cools slowly within warm rock underground?
 
  A) aphanitic
  B) porphyritic
  C) andesitic
  D) phaneritic


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stanleka1

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

Answer: C

Answer to Question 2

Answer: D


leilurhhh

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Reply 2 on: Jul 16, 2018
Wow, this really help

xiaomengxian

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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