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Laterite described and deﬁned
Average mineral composition of igneous rocks
19 other sections not shown
accumulation zone aluminium aluminous analysis Anand anatase Annex Australia Bardossy & Aleva bauxite bauxite deposits bedrock boehmite Brazil Butt cemented chemical classiﬁcation clay climate colour composed contain crust CSIRO cuirass deﬁned deﬁnition derived dunite duricrust elements erosion exploration Fe,O feldspar ferricrete ferruginous saprolite ﬁeld ﬁlled ﬁrst formation formed geochemical geochemistry Geol geological gibbsite goethite grains granite Guyana Shield halloysite hardened hematite horizon igneous India inﬂuence Intemational Interface iron kaolinite landscape laterite proﬁle lateritic bauxite lateritic duricrust lateritic weathering Lateritisation Processes lateritoid layer leaching maghemite material metamorphic metres minerals mottled zone nodules northem occur olivine original overlying oxides parent rock pisoids pisoliths plinthite Precambrian present pyroxene quartz regolith relict residual resulting sample saprock saprolite Schellmann sedimentary sediments silica smectite speciﬁc structure surface Suriname Table term laterite thickness tropical true laterite unconsolidated upper variable voids weathering front weathering products weathering proﬁle Westem Australia