The Elements of economic geology

Bibliographic data

Monograph

Identifikator:: 1773832379

URN:: urn:nbn:de:zbw-retromon-172798

Document type:: Monograph

Author:: Gregory, John W. http://d-nb.info/gnd/11683014X

Title:: The Elements of economic geology

Place of publication:: London

Publisher:: Methuen

Year of publication:: 1928

Scope:: XIV, 312 S.; graph. Darst.

Digitisation:: 2021

Collection:: Economics Books

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Index

Document type:: Monograph

Structure type:: Index

Title:: Subject index

Collection:: Economics Books

SUBJECT INDEX 309 FERTILISERS, 197-205, 214-7. Fluccan, 8. Fuel, 259, 296. Fuller’s earth, 173-4. precipitates, 145-6 ; bedded, 144 ; blackband, 146; bog iron, 147 ; classification of, 131; contact, 132; efflorescent, 147; igneous, 132; ore supplies, 130; organic, 146; oxide due to descending solutions, 134-42 ; primary lodes, 133-4; pyritic masses, 134; re- placement, 134-44; residual, 147; solubility, 130; surface ores, 147, ancient, 142-4; titani- ferous magnetites, 132. Isoseists, 249. [sovols, 281. TADE, 166 ; jadeite, 167. GARNETS, 167. Gash-vein, 8, Gems, the, 7, 161-7. Geology, economic, scope of, I; value of, 277. Gold ores, 35-64; classification of, 37; deep leads, 53-7; depth of lodes, 29 ; dredging, 53-4; gold- quartz lodes, 36-51; hydraulic mining, 53; with igneous rocks, 36; impregnations, 45, 50; in- filtration, 46; ladder-lodes, 44, 45; lodes, 36; Morro Velho Mine probably placer origin, 63-4; placers, 53; pneumato- lytic, 41, 43-4; propylitic origin of, 36-7; qualities, 35; in Queensland, 52; Rand Banket, 57-60; Rand Goldfield, 57-63 ; replacements, 45-8 ; saddle lodes, 9, 44; in sea-water, 35; secon- dary enrichments, 37, 51-3; vol canic rocks, gold ores in Rocky Mountains and New Zealand, 42. Goldfields, alluvial, 53-64 ; of West Australia, 48-51. Gouge, 8. Gossans, 31. Graphite, 265. Groynes, 2406. Guano. 201-2. KANKAR, 30. Kaolinite, 169, KK imberlite. 162. LADDER lodes, 9, 37, 44-5. Lateral secretion, 16, 23, 91, 103. Lapis Lazuli, 167. Lead, price, 96; qualities, 96; uses, 96. Ores of, 96-109; age of, 97, 99, 100, I0I, 108; classi- fication, 98 ; contact, 102 ; depth of, 97; disseminated ores of Mississippi, 105-7 ; ¢‘ flats’ and bodies due to descending solu tions, 106-8 ; with igneous rocks, 101-4; primary ores, 98-105; with quartz-porphyry sheets, 102-4; replacements, 102-5; secondary, 105-8; sedimentary, 108 ; source of, 108-9. Lignite or brown coal, 261, 262-3. Lithosphere, 16. Loaming, 6. Lode, ascensional origin of, 15; deposition of, 26; depth of, 27; formation of, 28 ; lode-track, 8; structure, 7, 27-3. HOMOSEISTS, 249. Horse, 12. Hydatogenesis, 26. Hydraulic mining, 53. Hydrothermal origin of ores, 26, 36 ; of platinum. 69. IGNEOUS ores, 26, 115-7, 137. Igneous rocks and ores, 18-9, 26, 36, 83-4, 89, 04, 101-4, 137. Impregnation ores, 37, 45. Indicators, 40-1. Iron, qualities, 129 ; history of, 129; used before bronze, 129. Ores of, 120-47; alluvial, 147: agueous MAGMATIC ores, 23-6. Mallee limestones, 30. Manganese, price, 149; qualities, 148. Ores, 148-50; distribution, 148, 150; formation of, 148-9 ; residual, 149.

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