Mining, geology, subsurface and 



ofiBce representation in — Cont. 



geologic technique and 

 mineral exploration, 991 



geologic technique and theory, 992 



indexing, 1010 



legend, 1019 



litho-compositional legend, 1024 



mapping scales, 997 



metallization legend, 1031 



purpose of geologic mapping, 990 



recording and posting 

 specifications, 1031 



structural legend, 1024 



subsurface cultural legend, 1022 



surface cultural legend, 1021 



system, 997 



textural legend, 1024 

 Mining geology, subsurface 



methods in, 969 



biogeochemical guides, 975 



drilling, 979 



exploration methods, 978 



exploratory procedures, 972 



geochemical guides, 975 



geologic guides and controls, 972 



geologic mapping, 976 



geophysics, 977 



igneous ore deposits, 969 



laboratory methods, 977 



metamorphic ore deposits, 971 



mineralogic guides, 974 



mining operations, 982 



representation and correlation 

 of data, 983 



sampling, 982 



sampling methods, 978 



sedimentary ore deposits, 969 



stratigraphic control, 976 



structural control, 972 



supergene deposits, 972 



trenching and stripping, 979 



valuation of mining properties, 988 

 Multiple-differential thermal 



analysis, 240 



allophane, 255 



ilunite, 259 



alunite-jarosite mixtures, 267 



alunite-kaolinite mixtures, 266 



apparatus, 241 



applications, qualitative, 250 



artificial mixtures, 261 



carbonates, 260 



dickite, 251 



endellite, 255 



halloysite, 255 



hydrous oxides, 258 



jarosite, 259 



kaolinite, 253 



kaolinite-dickite mixtures, 268 



kaolinite-goethite mixtures, 263 



Multiple-differential thermal 



analysis — Cont. 



kaolinite-montmorillonite 

 mixtures, 269 



kaolinite-quartz mixtures, 264 



kaolinite-sericite mixtures, 265 



minerals, 3-layer lattice, 257 



montmorillonite-sericite 

 mixtures, 270 



procedure, 245 



theory, 247 

 Nonconformity, 34 

 Offlap, 55 

 Oil-well cementing, 746 



procedure, 746 



requirements for, 747 

 Oil-well surveying, 548 



applications, 584 



equipment, 549 



recording, 581 

 Onlap, 55 

 Oriented cores, 591 



equipment, 591 

 Ostracods, 94 

 Otoliths, 108 

 Overstep, 55 



complete, 55 



definition, 55 

 Permeability, 299 



clastic sediments and rocks, 685 



cuttings sample, 356 



definition, 299 



detrital mineralogy, 129 



spontaneous potential, 

 effect on, 370 



thin sections, 181 

 Petrofabric analysis, 157 



applications, 168 



definition, 157 



field work and its presentation, 158 



laboratory techniques and 

 presentation of data, 164 

 Petrographic laboratory, 180 



flow sheet of, 180 

 PoUen, 108 

 Porosity, 299 



clastic sediments and rocks, 685 



cuttings sample, 356 



definition, 299 



detrital mineralogy, 129 



spontaneous potential, 

 effect on, 370 



thin sections, 181 

 Radioactivity logs, 345 

 Radioactivity well logging, 419 



applications, 427 



correlation with rock types, 438 



general considerations, 436 



instrumentation, 421 



interpretation, 422 

 Radiolaria, 105 



