Multiple choice

One mode of formation of minerals involves the decomposition of surface rocks, and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Which of the following minerals is/are formed in this manner?

a. Coal b. Gypsum c. Bauxite

  1. a, b and c

  2. b and c

  3. a and c

  4. a and b

  5. c only

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

This is the correct answer. Bauxite is formed by the decomposition of surface rocks, and the removal of soluble constituents, leaving a residual mass of weathered material containing bauxite ore.