Fabric code,Fabric description
"L","LIMESTONE"
"LS","LIMESTONE SHELLY"
"LSQF","LIMESTONE SHELLY QUARR FINE"
"LSQC","LIMESTONE SHELLY QUARR COARSE"
"C","CHALK"
"F","FLINT"
"I","IGNEOUS"
"IG","IGNEOUS GRANITE"
"ID","IGNEOUS DOLERITE"
"IL","IGNEOUS LAVA"
"LF","FRENCH BURR"
"LM","LIMESTONE MARBLE"
"LO","LIMESTONE OOLITIC"
"LSB","LIMESTONE SHELLY BEMBRIDGE"
"LOC","LIMESTONE OOLITIC CAEN"
"LSP","LIMESTONE SHELLY PURBECK"
"LOZ","LIMESTONE OOLITIC PORTLAND"
"S","SANDSTONE"
"SF","SANDSTONE FERRUGINOUS"
"SG","SANDSTONE GREENSAND"
"SR","SANDSTONE RED"
"SI","SANDSTONE IRONSTONE"
"SM","SANDSTONE MALMSTONE"
"M","METAMORPHIC"
"MK","METAMORPHIC KIMMERIDGE SHALE"
"MQ","METAMORPHIC QUARTZITE"
"MH","METAMORPHIC OTHER SHALE"
"MS","METAMORPHIC SLATE (not roofslate)"
"MT","METAMORPHIC SCHIST"
"O","OTHER TYPES"
"OB","BOXSTONE"
"OC","COAL"
"OM","MUDSTONE"
"OQ","QUARTZITE"
"OG","CONGLOMERATE"
"SLAT","SLATE (roofslates of unknown origin"
"SLWC","WEST COUNTRY SLATE (roofslates)"
"SLWE","WELSH SLATE (roofslates)"