Zinc can be obtained from Calamine(ZnCO₃) using which chemical reaction?

The major application of decomposition reaction is the extraction of metal from its ore. 

Example: Zinc can be obtained from calamine using a decomposition reaction. On decomposition, zinc carbonate produces zinc oxide which on reduction gives zinc.

ZnCO_3(s) $\to$ ZnO_(s) + CO_2(g)  (deomposition)

ZnO_(s)+C_(s)  $\stackrel{\mathrm{reduction}}{\to }$  Zn_(s) + CO_2(g) (reduction)