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Author Question: If the crustal abundance of some substance is 5 and a good ore deposit contains 25, what is the ... (Read 38 times)

abc

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on: Jul 15, 2018

If the crustal abundance of some substance is 5 and a good ore deposit contains 25, what is the
  concentration factor needed to economically mine this substance?
  a. 0.20
  b. 1
  c. 2
  d. 5
  e. 25



Question 2

What is the ratio of an element's abundance in an ore deposit to its average continental-crustal
  abundance?
  a. enrichment multiple
  b. concentration factor
  c. economic feasibility quotient
  d. use per capita
  e. Poisson's factor



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Ashley I

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

D

Answer to Question 2

B


abc

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Reply 2 on: Jul 15, 2018
Wow, this really help

abro1885

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Reply 3 on: Yesterday
:D TYSM

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