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GK QUESTION#3533

Which historical name was used for secondary zinc ores containing zinc carbonate and hydrous zinc silicate?

  1. AChalk
  2. BBorax
  3. CCalamineCorrect answer
  4. DBenzol
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Answer

C. Calamine

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Explanation

Calamine is a historical name for secondary zinc ores, especially smithsonite, zinc carbonate, and hemimorphite, a hydrous zinc silicate, which can occur together. It is not a single well-defined modern mineral species. The historical ore term is also distinct from modern calamine-lotion formulations.

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