Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página 10
... consisting of calc - spar , fluor - spar , quartz , baryta , or other sparry material , while the accompanying metallic ores are in the state of oxides , sul- phides , carbonates , and other chemical combinations . The slope at which a ...
... consisting of calc - spar , fluor - spar , quartz , baryta , or other sparry material , while the accompanying metallic ores are in the state of oxides , sul- phides , carbonates , and other chemical combinations . The slope at which a ...
Página 13
... consisting of oxygen and silicon , felspar of oxygen , silicon , alu- minium , sodium , potassium , & c . , and mica ... consists of mixed rocks , having no definite form or composition , and made up of several mineral ingredients . The ...
... consisting of oxygen and silicon , felspar of oxygen , silicon , alu- minium , sodium , potassium , & c . , and mica ... consists of mixed rocks , having no definite form or composition , and made up of several mineral ingredients . The ...
Página 18
... consist of two or more mineral ingredients , and are often of very varied and irregular composition . Without rigid adherence to mineralo- gical exactitude , they may be arranged , according to their predominating or more obvious ...
... consist of two or more mineral ingredients , and are often of very varied and irregular composition . Without rigid adherence to mineralo- gical exactitude , they may be arranged , according to their predominating or more obvious ...
Página 19
... consists wholly , or almost so , of alumino - silicious particles . It is usually tough and plastic , and is of ... consist of intermingled mud , clay , and sand , or of distinct layers of these . Shale is merely consolidated mud ...
... consists wholly , or almost so , of alumino - silicious particles . It is usually tough and plastic , and is of ... consist of intermingled mud , clay , and sand , or of distinct layers of these . Shale is merely consolidated mud ...
Página 22
... consist of varying admixtures of felspar , augite , and hornblende . The felstones , amygdaloids , and trap - tuffs are softer and less crystalline rocks - the felstones compact or earthy ; the amygdaloids having their vesicular ...
... consist of varying admixtures of felspar , augite , and hornblende . The felstones , amygdaloids , and trap - tuffs are softer and less crystalline rocks - the felstones compact or earthy ; the amygdaloids having their vesicular ...
Outras edições - Ver tudo
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