Multiple choice

Which of the following minerals is not found in placer deposits?

  1. Gold

  2. Silver

  3. Tin

  4. Platinum

  5. Bauxite

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Bauxite is formed when residual mass of weathered material containing ores remains after the decomposition of surface rocks, and the removal of soluble constituents from the surface.