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Saprolite is not as weathered as laterite; there is a continuum from the upper layer of saprolite to laterite. Saprolite (from Greek σαπρος (sapros) = putrid + λιθος (lithos) = rock) is a chemically weathered rock (literally, it means "rotten rock"). More intense weathering results in a continuous transition from saprolite to laterite.
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 ...
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 ...
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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 ]
Laterite gold deposits are formed from pre-existing gold deposits (including some placer deposits) during prolonged weathering of the bedrock. Gold is deposited within iron oxides in the weathered rock or regolith, and may be further enriched by reworking by erosion. Some laterite deposits are formed by wind erosion of the bedrock leaving a ...