Step 1: Match Hydrothermal deposits (P).
Hydrothermal deposits are formed from highly fluid, mineral-rich solutions derived from magma.
\[
\Rightarrow P \rightarrow III
\]
Step 2: Match Metasomatic deposits (Q).
Metasomatism is the chemical alteration of a rock by hydrothermal and other fluids, causing mineralogical changes.
\[
\Rightarrow Q \rightarrow I
\]
Step 3: Match Placer deposits (R).
These form through mechanical concentration of heavy minerals from weathered debris transported by water.
\[
\Rightarrow R \rightarrow IV
\]
Step 4: Match Lateritic deposits (S).
These are formed by intensive leaching of rocks in tropical regions, leaving behind insoluble minerals like bauxite.
\[
\Rightarrow S \rightarrow II
\]
Final Matching: P-III, Q-I, R-IV, S-II