CATEGORY CODE DESCRIPTION Regolith COL Colluvium Regolith ALV Alluvium Regolith FR Ferruginous Regolith WTH Weathered Regolith AEO Aeolian Sublithology AMP Amphibolite Sublithology GNS Gneiss Sublithology GRT Granulite Sublithology msGRT muscovite Granulite Sublithology SCH Schist Sublithology VQ Quartz Sublithology CHT Chert Sublithology FEL Undiff Felsic Sublithology PEG pegmatite Texture cgr Coarse grained Texture fgr Fine grained Texture mgr Medium grained Texture vfgr Very fine grained Colour drd dark red Colour drd-br dark red browm Colour or orange Colour rd-br redbrown Colour wh white Alteration mn magnetite Alteration si silicification