A) Haematite
B) Magnetite
C) Cassiterite
D) Limonite
Correct Answer: C
Solution :
Cassiterite\[(Sn{{O}_{2}})\], Magnetite\[(F{{e}_{3}}{{O}_{4}})\], Haematite\[(F{{e}_{2}}{{O}_{3}})\], Limonite\[(F{{e}_{2}}{{O}_{3}}.3{{H}_{2}}O)\].
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