Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página viii
... various arts and manufactures in which mineral and metallic substances are employed . As it is chiefly with the raw materials - their characters and modes of occurrence that the practical geologist has to deal , com- paratively little ...
... various arts and manufactures in which mineral and metallic substances are employed . As it is chiefly with the raw materials - their characters and modes of occurrence that the practical geologist has to deal , com- paratively little ...
Página xv
... VARIOUS VEINS , • FAULTED OR DISPLACED VEINS , VEIN - MINING - SHAFTS AND ADITS , HYDRAULIC PLACER - WORKING , · AMERICAN OIL - WELL ( after Gesner ) , BURRSTONE - MILLSTONES , GEM - GUTTING - ROSE , BRILLIANT , EN CABOCHON , 144 146 ...
... VARIOUS VEINS , • FAULTED OR DISPLACED VEINS , VEIN - MINING - SHAFTS AND ADITS , HYDRAULIC PLACER - WORKING , · AMERICAN OIL - WELL ( after Gesner ) , BURRSTONE - MILLSTONES , GEM - GUTTING - ROSE , BRILLIANT , EN CABOCHON , 144 146 ...
Página 7
... various formations , the practical operator will be in a much better position to understand the nature of the materials that come within the range of his own special department . Of course , it is only with the raw materials — their ...
... various formations , the practical operator will be in a much better position to understand the nature of the materials that come within the range of his own special department . Of course , it is only with the raw materials — their ...
Página 13
... various minerals are composed - quartz , consisting of oxygen and silicon , felspar of oxygen , silicon , alu- minium , sodium , potassium , & c . , and mica of oxygen , mag- nesium , potassium , & c . Simple minerals , which constitute ...
... various minerals are composed - quartz , consisting of oxygen and silicon , felspar of oxygen , silicon , alu- minium , sodium , potassium , & c . , and mica of oxygen , mag- nesium , potassium , & c . Simple minerals , which constitute ...
Página 19
... various colours , according to the presence or absence of organic matter and metallic oxides . Fire - clay is a variety usually obtained from the coal formation , and is so called from its power of resisting the strongest action of heat ...
... various colours , according to the presence or absence of organic matter and metallic oxides . Fire - clay is a variety usually obtained from the coal formation , and is so called from its power of resisting the strongest action of heat ...
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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