Eluvium
The process of removal of materials from geological or soil horizons is called eluviation or leaching.The strict eluvial horizon (E horizon) is typically light gray, clay-depleted, contains little organic matter and has a high concentration of silt and sand particles composed of quartz and other resistant minerals.Diamonds within yellow ground (weathered portions of kimberlites) may be considered to be eluvial deposits.Cassiterite and columbite-tantalite deposits also occur as residual or eluvial concentrations.Weathering supergene enrichment of an apatite rich carbonatite in Ontario has produced a significant eluvial phosphate ore deposit.
Eluvium
Eluvium (musician)geologyweatheringsoil sciencepercolationsoil horizonsilluvial depositilluviationquartzmineralsore depositstungstenplacer depositsDiamondskimberlitesCassiteritecolumbite-tantalitePitinga tin depositBrazilsupergeneapatitecarbonatiteOntariophosphateAlluviumColluviumDiluviumLessivageSoil Science Society of AmericaWayback MachineSoil classificationWorld Reference Base for Soil ResourcesAcrisolsAlisolsAndosolsAnthrosolsArenosolsCalcisolsCambisolsChernozemCryosolsDurisolsFerralsolsFluvisolsGleysolsGypsisolsHistosolKastanozemsLeptosolsLixisolsLuvisolsNitisolsPhaeozemsPlanosolsPlinthosolsPodzolsRegosolsRetisolsSolonchaksSolonetzStagnosolTechnosolsUmbrisolsVertisolsUSDA soil taxonomyAlfisolsAndisolsAridisolsEntisolsGelisolsHistosolsInceptisolsMollisolsOxisolsSpodosolsUltisolsFAO soil classificationUnified Soil Classification SystemAASHTO Soil Classification SystemRéférentiel pédologiqueCanadian system of soil classificationAustralian Soil ClassificationPolish Soil Classification1938 USDA soil taxonomyList of U.S. state soilsList of vineyard soil typesTopsoilSubsoilSoil crustClaypanHardpanGypcrustCalicheParent materialPedosphereLaimosphereRhizosphereBulk soilAlkali soilBay mudBlue gooBrickearthBrown earthCalcareous grasslandDark earthDry quicksandDuplex soilExpansive clayFill dirtFuller's earthHydrophobic soilLunar soilMartian soilMuskegPaleosolPrime farmlandQuicksandSerpentine soilSpodic soilStagnogleySubaqueous soilTerra pretaTerra rossaTropical peatYedoma