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Author Question: Which mineral, quartz or feldspar, will crystallize first? Why? What will be an ideal ... (Read 109 times)

Collmarie

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on: Jul 29, 2018
Which mineral, quartz or feldspar, will crystallize first? Why?
 
  What will be an ideal response?

Question 2

As the process of crystallization continues (from molten liquid to solid crystal) the composition of the molten liquid becomes
 
  A) depleted in the minerals that have already crystallized.
  B) enriched in the minerals that have already crystallized.
  C) depleted in the minerals that have yet to crystallize.
  D) enriched in the minerals that have yet to crystallize.
  E) both A and D
  F) both B and C


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bimper21

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: Minerals with high silica content are the last to crystallize. Feldspar, with its lower percentage of silica, will crystallize before quartz, which is 100 silica.

Answer to Question 2

Answer: E


Collmarie

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Reply 2 on: Jul 29, 2018
Gracias!

jackie

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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