 | Geological Survey of Canada - 1873 - 646 lehte
...It seems possible that, in some cases, beds may have been formed by the accumulation of iron sands, just as they are forming in the Gulf of St. Lawrence...it is well known that in many cases ores on being pulverised may be more or less completely separated into a magnetic portion containing little or no... | |
 | Elkanah Billings, Bernard James Harrington, James Thomas Donald - 1875 - 498 lehte
...Sti Lawrence to-day, the material being derived from the disintegration of pre-existing crvstalline rocks. Such beds we should expect to contain not only...it is well known that in many cases ores on being pulverised may be more or less completely separated into a magnetic portion containing little or no... | |
 | Geological and Natural History Survey of Minnesota - 1891 - 538 lehte
...It seems possible that, in some cases, beds may have been formed by the accumulation of iron sands, just as they are forming In the Gulf of St. Lawrence...we should expect to contain not only magnetite, but llmenlte, and It Is well known that in many cases ore on being pulverized may be more or less completely... | |
 | Newton Horace Winchell, Horace Vaughn Winchell - 1891 - 546 lehte
...It seems possible that, in some cases, beds may have been formed by the accumulation of iron sands, just as they are forming In the Gulf of St. Lawrence...beds we should expect to contain not only magnetite, bui llmenite, and it is well known that in many cases ore on being pulverized may be more or less completely... | |
 | Newton Horace Winchell, Horace Vaughn Winchell - 1891 - 542 lehte
...It seems possible that, in some cases, beds may have been formed by the accumulation of iron sands, just as they are. forming In the Gulf of St. Lawrence...material being derived from the disintegration of pre-existinz crystalline rocks. Such beds we should expect to contain not only magnetite, but llmenite,... | |
 | Ontario. Department of Mines, Ontario. Bureau of Mines - 1893 - 500 lehte
...afterwards altered to magnetite. In some cases beds may have been formed by the accumulation of iron sands, as they are forming in the gulf of St. Lawrence today,...disintegration of pre-existing crystalline rocks, in which case they might be expected to contain not only 28 Geologicai Survey of Canada, 1876-7, pp.... | |
 | Ontario. Legislative Assembly - 1893 - 838 lehte
...afterwards altered to magnetite. In some cases beds may have been formed by rfw accumulation of iron sands, as they are forming in the gulf of St. Lawrence today,...material being derived from the disintegration of pre-exitUBg crystalline rocks, in which case they might be expected to contain not only Veins and beds... | |
 | Geological Society of America - 1912 - 898 lehte
...stratified magnetites were deposited at first as iron sands, "just as they are forming in the Gulf of Saint Lawrence today, the material being derived from the...disintegration of preexisting crystalline rocks." 9 Hunt believed that the oxides of iron, when abundant enough to constitute oi» masses, were for the... | |
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Origin of sedias to whether they were originally deposited as such, or in some other tit(?s- — form, and afterwards altered to magnetite. It seems possible that, in some cases, beds may have been formed by the accumulation of iron sands, just as they... 