Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
No interior do livro
Resultados 1-5 de 41
Página 13
... geologist , consists of mixed rocks , having no definite form or composition , and made up of several mineral ingredients . The simple minerals are very numerous , as quartz , felspar , ITS STRUCTURE AND COMPOSITION . 13.
... geologist , consists of mixed rocks , having no definite form or composition , and made up of several mineral ingredients . The simple minerals are very numerous , as quartz , felspar , ITS STRUCTURE AND COMPOSITION . 13.
Página 18
... 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 ingredients , into the following ...
... 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 ingredients , into the following ...
Página 20
... ingredient predominates . Gypsum is a sulphate of lime , which when calcined forms the well - known plaster of Paris or stucco . It occurs massive - crystalline , granular , or fibrous , and when crystallised is known as selenite ...
... ingredient predominates . Gypsum is a sulphate of lime , which when calcined forms the well - known plaster of Paris or stucco . It occurs massive - crystalline , granular , or fibrous , and when crystallised is known as selenite ...
Página 22
... ingredient in the rocks known as chlorite - slate and chlorite - schist . Talc , a whitish - green magnesian mineral , closely allied to and resembling mica . It is transparent in thin plates , but is generally massive , sectile , soft ...
... ingredient in the rocks known as chlorite - slate and chlorite - schist . Talc , a whitish - green magnesian mineral , closely allied to and resembling mica . It is transparent in thin plates , but is generally massive , sectile , soft ...
Página 33
... ingredients have been brought from a distance , and have no geological connection with the rocks on which they rest . Under the former are comprehended such as arise from the disintegration of limestones , chalks , traps , granites ...
... ingredients have been brought from a distance , and have no geological connection with the rocks on which they rest . Under the former are comprehended such as arise from the disintegration of limestones , chalks , traps , granites ...
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 alloys alumina amount antimony arsenic artificial arts and manufactures basalts beds bismuth bituminous blocks borax Britain calcareous carbonate carbonic acid Carboniferous cements cent chalk chemical chiefly chloride clay coal colour compact composition consists containing copper crust crystalline deposits Derbyshire districts durable earth embankments employed engineer extensively felspar fire-clay formations geologist Geology gold granites greenstones grits gypsum hard heat hydraulic ingredients iridium iron ironstones known lead lignites lime limestones lustre magnesia manganese manures marbles masses material metal metamorphic mineral mortar nature obtained occasionally occur Oolite ornamental oxide peat pigments polishing porphyries potash powder preparation purposes pyrites quarries quartz require rocks saline salts sand sandstones schists serpentines shales silica Silurian silver soda sodium soft soils specific gravity 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