Diamonds are more concentrated in which deposits?

Diamonds are more concentrated in which deposits?

• A. Marine deposits
• B. Primary deposits
• C. Alluvial deposits
• D. Kimberlite pipes

Answer: (B)

Diamonds are found most concentrated in primary deposits, which are the original diamond-bearing rocks formed as mantle-derived magma carrying diamonds crystallizes and concentrates them in pipe-like bodies. This is where diamonds are most densely packed before any erosion or transport occurs. In contrast, alluvial and marine deposits are secondary concentrations created when weathered diamonds are carried by water and redeposited; they can contain diamonds too, but the grains are more dispersed and the concentration is lower. Kimberlite pipes are the classic type of primary deposit that hosts the highest diamond concentrations, so the best answer is primary deposits.

Diamonds are found most concentrated in primary deposits, which are the original diamond-bearing rocks formed as mantle-derived magma carrying diamonds crystallizes and concentrates them in pipe-like bodies. This is where diamonds are most densely packed before any erosion or transport occurs. In contrast, alluvial and marine deposits are secondary concentrations created when weathered diamonds are carried by water and redeposited; they can contain diamonds too, but the grains are more dispersed and the concentration is lower. Kimberlite pipes are the classic type of primary deposit that hosts the highest diamond concentrations, so the best answer is primary deposits.