 | Andrew Ure - 1844 - 630 pages
...but in different ores. Among primitive rocks, magnetic iron ore and specular iron ore occur ehiefly in beds, sometimes of enormous size ; the ores of red or brown oxyde of iron (hematite) are found generally in veins, or occasionally in masses with sparry iron,... | |
 | Charles Barlow - 1772 - 502 pages
...rocks in beds sometimes of enormous size, in the forms of specular iron ore and magnetic iron ore ; the ores of red or brown oxide of iron (haematite)...frequently in the coal-measure strata ; as beds of clay, ironstone, of globular-iron oxide, and carbonate of iron. In alluvial districts are found ores... | |
 | Thomas Antisell - 1852 - 728 pages
...mineral eras, but in different ores. Among primitive rocks, magnetic iron ore and specular iron ore occur chiefly in beds, sometimes of enormous size ; the ores of red or brown oxide of iron (hematite) are found generally in veins, or occasionally in masses with sparry iron, both in primitive... | |
 | G.P. Putnam & Co - 1852 - 728 pages
...mineral eras, but in différent ores. Among primitive rocks magnetic iron ore and specular iron ore occur chiefly in beds, sometimes of enormous size : the ! ores of red or brown oxide of iron (hscmatite) are found generally in veins, or occasionally in mosses witli sparry iron, ¡ both in primitive... | |
 | Andrew Ure - 1853 - 1034 pages
...mineral eras, but in différent ores. Among primitive rocks, magnetic iron ore and specular iron ore occur chiefly in beds, sometimes of enormous size...the ores of red or brown oxide of iron ( haematite) arc found generally in veins, or occasionally in masses with sparry iron, both in primitive and transition... | |
 | Andrew Ure - 1853 - 1034 pages
...mineral eras, but in different ores. Among primitive rocks, magnetic iron ore and specular iron ore occur chiefly in beds, sometimes of enormous size; the ores of red or brown oxide of iron (lucmatite) arc found generally in veins, or occasionally in masses with sparry iron, both in primitive... | |
 | Andrew Ure - 1854 - 1042 pages
...mineral eras, but in different ores. Among primitive rocks, magnetic iron ore and specular iron ore occur chiefly in beds, sometimes of enormous size; the ores of red or brown oxyde of iron (hematite) are found generally in veins, or occasionally in masses with sparry iron,... | |
 | Andrew Ure - 1867 - 1144 pages
...different ores. Among primary rocks, magnetic iron ore and specular iron ore occur chiefly in bt-ds, sometimes of enormous size; the ores of red or brown oxide of iron (hœmutite) an- found sometimes in veins, but occasionally in very large masses, both in primitive... | |
 | Jacob Bigelow - 1840 - 422 pages
...mineral eras, but in different ores. Among primitive rocks, magnetic iron ore and specular iron ore occur chiefly in beds, sometimes of enormous size...or, occasionally, in masses with sparry iron, both iu primitive and transition rocks ; as also, sometimes, in secondary strata ; but, more frequently,... | |
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Iron, is met with in four different mineral eras, but in different ores. Among primitive rocks, magnetic iron ore and specular iron ore occur chiefly in beds, sometimes of enormous size; the ores of red or brown oxide of iron... 