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A represents soil; B represents laterite, a regolith; C represents saprolite, a less-weathered regolith; beneath C is bedrock. Saprolite is a chemically weathered rock. Saprolites form in the lower zones of soil profiles and represent deep weathering of the bedrock surface. In most outcrops, its color comes from ferric compounds.
Soil layers, from soil down to bedrock: A represents soil; B represents laterite, a regolith; C represents saprolite, a less-weathered regolith; below C is bedrock Tropical weathering (laterization) is a prolonged process of chemical weathering which produces a wide variety in the thickness, grade, chemistry and ore mineralogy of the resulting ...
Laterites are formed by the breakdown of minerals which then leach into groundwater, the leftover minerals join to form the new mineral known as laterites. Nickel is turned into usable quality ore grade by being merged into the newly formed stable minerals. [3] Silicate type (or saprolite type) nickel ore formed beneath the limonite zone. It ...
In contrast, "a decrease in the amount of rock fragments as depth increases, especially over saprolite, indicates that the soil materials probably has been transported down slope". [5] Identification of residuum is relevant in soil science and geology because accurate identification conveys direct and implicit info about soil itself, the ...
Saprolite is a particular example of a residual soil formed from the transformation of granite, metamorphic and other types of bedrock into clay minerals. Often called weathered granite, saprolite is the result of weathering processes that include: hydrolysis, chelation from organic compounds, hydration and physical processes that include ...
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Laterite is a class of materials which contain significant amounts of aluminium and iron. [22] They can form clays able to hold many minerals within them. [ 22 ] The weathering of rocks by leaching and oxidising conditions results in the formation of clay-like [ 22 ] minerals such as goethite , lepidocrocite , and hematite . [ 22 ]