Identify the copper-containing minerals.

(A) Covellite

(B) Azurite

(C) Powellite

(D) Limonite

Choose the correct answer from the options given below:

Correct option is A

Explanation of the Correct Option (a): Only (A) and (B)
(A) Covellite – Copper mineral
· Chemical composition: CuS
· Important sulphide ore of copper.
· Commonly occurs in oxidized zones of copper deposits.
· Hence, it is a copper-containing mineral.
(B) Azurite – Copper mineral
· Chemical composition: Cu₃(CO₃)₂(OH)₂
· A secondary copper carbonate mineral.
· Characterized by deep blue colour.
· Used as an indicator of copper ore deposits.
· Therefore, it is a copper-containing mineral.
Explanation of Other Options
(C) Powellite
· Chemical composition: CaMoO₄
· A molybdenum mineral.
· Does not contain copper.
· Hence, incorrect.
(D) Limonite
· A hydrated iron oxide.
· Major source of iron, not copper.
· Therefore, incorrect.
Key Points Related to the Question
· Copper minerals: Covellite, Azurite, Chalcopyrite, Malachite
· Iron mineral: Limonite
· Molybdenum mineral: Powellite