A) dolomite
B) malachite
C) copper pyrites
D) azurite
Correct Answer: C
Solution :
Copper pyrities\[CuFe{{S}_{2}}\] Malachite \[Cu{{\left( OH \right)}_{2}}\text{ }.\text{ }CuC{{O}_{3}}\] Azurite \[Cu{{\left( OH \right)}_{2}}.\text{ }2\text{ }CuC{{O}_{3}}\] Dolomite \[CaC{{O}_{3}}.\text{ }MgC{{O}_{3}}\]
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