Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página 10
... oxides , sul- phides , carbonates , and other chemical combinations . The slope at which a stratum lies to the horizon constitutes , in geo- logical language , its dip or angle of inclination ; that portion of a stratum which comes to ...
... oxides , sul- phides , carbonates , and other chemical combinations . The slope at which a stratum lies to the horizon constitutes , in geo- logical language , its dip or angle of inclination ; that portion of a stratum which comes to ...
Página 12
... oxide of iron -— G = 4.5 — 5.5 ; H = 5.5-6.5 - means that its specific weight is from four and a half to five and a half times greater than that of water , and that in hardness it stands between five and a half and six and a half in the ...
... oxide of iron -— G = 4.5 — 5.5 ; H = 5.5-6.5 - means that its specific weight is from four and a half to five and a half times greater than that of water , and that in hardness it stands between five and a half and six and a half in the ...
Página 16
... oxides . ANHYDROUS GROUP - Siderite , rhodocroisite , Smithsonite , man- ganocalcite , cerrussite .— ( Massive Clay - band and Black - band iron- stones ) . HYDROUS GROUP - Lanthanite , zaratite , hydrozincite , aurichalcite , malachite ...
... oxides . ANHYDROUS GROUP - Siderite , rhodocroisite , Smithsonite , man- ganocalcite , cerrussite .— ( Massive Clay - band and Black - band iron- stones ) . HYDROUS GROUP - Lanthanite , zaratite , hydrozincite , aurichalcite , malachite ...
Página 17
... oxides of the earths and alkalies . varieties . QUARTZ GROUP- ( crystalline ) rock - crystal , with its varieties ; ( com pact ) calcedony , with its varieties ; ( compact hydrous ) opal , with it FELSPAR GROUP - Anorthite , Labradorite ...
... oxides of the earths and alkalies . varieties . QUARTZ GROUP- ( crystalline ) rock - crystal , with its varieties ; ( com pact ) calcedony , with its varieties ; ( compact hydrous ) opal , with it FELSPAR GROUP - Anorthite , Labradorite ...
Página 19
... oxide , or other material . Grit is the term applied to a sand - rock , when the particles are hard and irregular ... oxides . Fire - clay is a variety usually obtained from the coal formation , and is so called from its power of ...
... oxide , or other material . Grit is the term applied to a sand - rock , when the particles are hard and irregular ... oxides . Fire - clay is a variety usually obtained from the coal formation , and is so called from its power of ...
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Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Palavras e frases frequentes
abundant admixture agricultural alumina amount antimony arsenic artificial arts and manufactures basalts beds bismuth bituminous blocks borax Britain calcareous carbonate carbonic acid Carboniferous cements chalk chemical chiefly chloride clay coal colour compact composition consists containing copper crust crystalline crystals deposits Derbyshire districts durable earth employed engineer extensively felspar fire-clay formations gems geologist Geology gold granites greenstones grits gypsum hard heat hence hydraulic ingredients iron ironstones known lignites lime limestones lustre magnesia manganese manures marbles masses material metamorphic mineral and metallic mortar nature obtained occasionally occur Oolite ornamental oxide peat pigments polishing porphyries potash preparation purposes pyrites quarries quartz require rocks saline salts sand sandstones schists serpentines shales silica Silurian silver soda sodium soft soils specific gravity springs stones strata stratified structure substances sulphate sulphide sulphuric acid surface tertiary texture thickness tints tion tons usually varieties various vary veins volcanic yellow yield zinc