Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página xi
... SANDS WE VITRIFY , 190 Glass and its Commercial Varieties . Materials employed in Glass - making . 3. GLAZES , ENAMELS , COLOURS , Mineral and Metallic Bases of these . 192 XI . GRINDING , WHETTING , & POLISHING MATERIALS , CONTENTS . xi.
... SANDS WE VITRIFY , 190 Glass and its Commercial Varieties . Materials employed in Glass - making . 3. GLAZES , ENAMELS , COLOURS , Mineral and Metallic Bases of these . 192 XI . GRINDING , WHETTING , & POLISHING MATERIALS , CONTENTS . xi.
Página xii
... Sands - Crushed Sandstones . Pumice , Emery , Garnet - Rock . Diamond - Dust , and Diamond - Points . 5. WHETSTONES AND HONES , Batts or Silicious Sandstones . Hones and Oilstones . 199 199 204 6. BURNISHERS , 206 Agates , Bloodstones ...
... Sands - Crushed Sandstones . Pumice , Emery , Garnet - Rock . Diamond - Dust , and Diamond - Points . 5. WHETSTONES AND HONES , Batts or Silicious Sandstones . Hones and Oilstones . 199 199 204 6. BURNISHERS , 206 Agates , Bloodstones ...
Página 4
... sands , and gravels with which he has to operate . It is ignorance on this point which often causes the builder to bring from a distance materials which could be obtained of equal quality and at cheaper rate in his own immediate ...
... sands , and gravels with which he has to operate . It is ignorance on this point which often causes the builder to bring from a distance materials which could be obtained of equal quality and at cheaper rate in his own immediate ...
Página 5
... sands from the earth ; all our mineral pigments are procured directly or indirectly from the same source ; so like- wise are all our metals , whether native or as ores ; and so also our fossil fuels and lights ; our millstones ...
... sands from the earth ; all our mineral pigments are procured directly or indirectly from the same source ; so like- wise are all our metals , whether native or as ores ; and so also our fossil fuels and lights ; our millstones ...
Página 8
... sands , sandstones , clays , shales , peats , coals , limestones , ironstones , lavas , basalts , granites . Whatever their mineral character , these rocks are found to occur in two main positions -stratified or bedded , and ...
... sands , sandstones , clays , shales , peats , coals , limestones , ironstones , lavas , basalts , granites . Whatever their mineral character , these rocks are found to occur in two main positions -stratified or bedded , and ...
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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