A) limonite
B) siderite
C) carnallite
D) chalcopyrites
Correct Answer: C
Solution :
Limonite\[-F{{e}_{2}}{{O}_{3}}\,.\,3{{H}_{2}}O\] Siderite\[-FeC{{O}_{3}}\] Carnallite \[-KCl\,.\,MgC{{l}_{2}}\,.\,6{{H}_{2}}O\] Chalcopyrites \[-CuFe{{S}_{2}}\]
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