Which of the following magnetic impurity is present in Cassiterite ore?
Which of the following magnetic impurity is present in Cassiterite ore?
$\mathrm{Fe}_{2} \mathrm{O}_{3}$
$\mathrm{FeW} \mathrm{O}_{4}$
$\mathrm{FeO}$
$\mathrm{Fe}_{3} \mathrm{O}_{4}$
Solution
The magnetic impurity present in cassiterite ore is wolframite $\left([\mathrm{Fe} / \mathrm{Mn}] \mathrm{W} \mathrm{O}_{4}\right)$,
It contains magnetic impurities of tungstates of iron and managanese and the combination is called as wolfromite.