What mineral particles are the dominant colouring agents in reddish, brownish, and yellowish soils?
A)soluble potassium and sodium bicarbonates
B)humus and calcium carbonate
C)very fine-sized silica and calcite particles
D)dust-sized grains of iron oxides

Question

Quizplus · Accepted Answer

Dust-sized grains of iron oxides (usually hematite, goethite, or limonite) are the dominant colouring agents in reddish, brownish, and yellowish soils. These iron oxides form as a result of weathering of iron-bearing minerals in the parent material.

What Mineral Particles Are the Dominant Colouring Agents in Reddish