Multiple choice

Which of the following copper minerals is the least pure?

  1. Azurite

  2. Cuprite

  3. Malachite

  4. Covellite

  5. Chalcocite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The percentage of copper in azurite, (2CuCO3.Cu(OH)2) is 55.1%. Hence, azurite is the least pure among all the given minerals.

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