What are the inorganic material forming the composition of soil known as?
The inorganic portion of soil does not have a specific name but is referred to the as the “inorganic portion’. These are minerals, particles of rock from different types of parent materials. Soils that are red in color have a high iron content. Soils called clay have very small particle size composition that gives them plasticity. In the case of loam there is a high percentage of sand that makes it desirable for agricultural crops. In essences all rocks are silicates. But when combined with specific elements they become specific minerals. Each mineral and particle size distribution can give soil different characteristics.