Code Description AB Alteration Breccia AM Massive sulphide BM High-mag Basalt BP Picritic Basalt BR_M Mining Code - Breccia BS Spilitic Basalt BS_M Mining Code - Black Shale BT Tholeiitic Basalt BV Undifferentiated Mafic Etrusive BX NULL C cover CAR_M Mining Code -Carry CC Calcrete CE Evaporites CF Massive Ironstone CH Chert CI BIF CP Pisolites CU Undifferentiated - Chemical Sediment CZ Phosphorites d_M Mining Code -Pisolite/laterite FC Dacite FE Ferricrete FL_M Mining Code -Fill FO Rhyodacite FR Rhyolite FU Undifferentiated - Acid Extrusive FZ Fault Zone GA Alkali feldspar granite GD Granodiorite GG Granite GL Aplite GM Monzogranite GN Gossan GP Porphyry GS Syenogranite GT Tonalite GU Undifferentiated - Acid Intrusive GW Greywacke/Wacke GZ Pegmatite HP Hardpan HS Skarn HU Undifferentiated - Hydrothermal HY Mylonite ID Diorite ID_M Mining Code -Dolerite II Undifferentiated - Intermediate Intrusive IM Monzonite IP Porphyry IS Syenite IT Trachyte IU Undifferentiated Intermediate Igneous IV Andesite IY Trachy-andesite LA Lamprophyre LC Carbonatite LK Kimberlite LL Lamproite LM Laterite - Mottled Zone LP Laterite - Pisolites LS Laterite - Saprolite LT Laterite LU Undifferentiated - Lamprophyre MA Amphibolite - Unknown Protolith MB Marble MG Gneiss - Unknown Original Rock MH Hornfels MI Migmatite ML Slate MN Granulite MS Schist MU Metamorphic rock - undivided MY Phyllite NR No recognisable lithology OA Anorthosite OB Gabbronorite OD Dolerite OG Gabbro OM Magnetitite ON Norite OT Troctolite OU Undifferentiated - Mafic PA Amphibolite - Sedimentary Protolith PB Metacarbonate/marble PE Semipelite PG Gneiss - Sedimentary Origin PH Hornfels PL Slate PM Psammite PN Granulite PP Pelite PQ Quartzite PS Schist PX Calcsilicate QL Laminated Qtz QR_M Mining Code -Quartz rubble QT quartz RA Amphibolite - Igneous Protolith RF Metafelsic RG Gneiss RM Metamafic RN Granulite RS Schist RU Meta-ultramafic SB Breccia SC Conglomerate SD Dolomite SE Sericitic sheared SF Interbedded - mud & silt SK Coal SL Limestone SM Mudstone SN Interbedded - sand & silt SN_M Mining Code -Interbedded sandstone and siltstone SR Silcrete SS Sandstone SS_M Mining Code -Sandstone unspecified SS1_M Mining Code -Very Fine Sandstone SS2_M Mining Code -Fine Grained Sandstone SS3_M Mining Code -Medium Grained Sandstone SS4_M Mining Code -Coarse Grained Sandstone SS5_M Mining Code -Very Coarse Grained Sandstone SS6_M Mining Code -Pebbly Sandstone ST Siltstone ST_M Mining Code -Siltstone SU Undifferentiated - Sediment TB Tertiary? From Tanami database UB Basaltic Komatiite UC Unconsolidated Clay UD Dunite UG Unconsolidated Gravel UH Hornblendeite UK Komatiite UM Uncolsolidated Mud UP Peridotite US Unconsoildated Sand USA Alluvium USC Colluvium UU Undifferentiated Ultramafic UX Pyroxenite VN Vein VN_M Mining Code -Quartz Vein WB Backfill WC cavity WL Lost Core WP Stockpile WS Stope WT Tailings WW Mullock/Waste X_M Mining Code -Soil XX Contamination YC Cataclasite YM Mylonite