Bulletin, Issue 6 |
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acid Alumina Animike associated basalt beds Bessemer breccia carbonate of iron carbonic acid cars cent chalcedonic chemical precipitation chlorite coal color containing crystalline schists crystals decomposition drill Duluth eruptive feet feldspar ferruginous fissures formation furnace gabbro Geol Geological geologists gneiss grains granite green schist greenstone hematite Hist hole hornblende Huronian igneous Inst Iron Company iron ore deposits iron-ore Jasper jaspilyte Jour Keewatin Lake Superior Laurentian Leonidas Merritt lime limestone limonite lodes magnesia magnetic magnetite masses Mesabi Mesabi range Metallic iron metamorphism mica mineral Mining Company Minneapolis Minnesota occur ocean origin oxide of iron phosphorus Plate Proc produced Prof pyrite quartz quartzyte range region sandstone schists sedimentary sediments sericitic shaft shares siderite silica Silurian slates Soap rock specular steel strata structure surface Taconic theory Thick tion Tower Trans veins Vermilion volcanic Wisconsin
Popular passages
Page 365 - THIS INDENTURE, made this day of , in the year One thousand, nine hundred and , between of , the party of the first part...
Page 364 - Nevada," approved July twenty-five, eighteen hundred and sixty-six. SEC. 2345. The provisions of the preceding sections of this chapter shall not apply to the mineral lands situated in the States of Michigan, Wisconsin, and Minnesota, which are declared free and open to exploration and purchase, according to legal subdivisions, in like manner as before the tenth day of May, eighteen hundred and seventy-two. And any...
Page 364 - States named since the tenth of May, eighteen hundred and seventytwo, may be patented without reference to any of the foregoing provisions of this chapter. Such lands shall be offered for public sale in the same manner, at the same minimum price, and under the same rights of pre-emption as other public lands.
Page 369 - ... by paying to the local agent therefor $5 per acre cash, and a further sum of $50 to cover the cost of survey, obtain a patent for said claim, as provided in the said mining regulations.
Page 404 - ... density. Under the pressure of such a high barometric column, condensation would take place at a temperature much above the present boiling point of water, and the depressed portions of the half-cooled crust would be flooded with a highly heated solution of hydrochloric and sulphuric acids, whose action in decomposing the silicates is easily intelligible to the chemist.
Page 107 - ... or volcanic glasses. The atmosphere, charged with acid gases which surrounded this primitive rock must have been of immense density. Under the pressure of such a high barometric column, condensation would take place at a temperature much above the present boiling point of water, and the depressed portions of the half-cooled crust would be flooded with a highly heated solution of hydrochloric acid, whose action in decomposing the silicates is easily intelligible to the chemist.
Page 257 - 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 to-day, the material being derived from the disintegration of pre-existing crystalline rocks.
Page 366 - January in each year, during the period hereinbefore stipulated, or during the period this contract continues in force, pay to the treasurer of the state of Minnesota, for all the iron ore mined and removed from said land during the three (3) months preceding the first (1st) day of the month in which payment is to be made, as aforesaid...
Page 407 - Huronian ores. Chemical precipitation in hot oceanic waters, united with simultaneous sedimentary distribution might produce the Keewatin ores in a manner consistent not only with the physical conditions that prevailed at the time of their formation, and with the structural peculiarities which they exhibit, but also in accordance with the known reactions of heated alkaline waters, and with the chemical character which the ores are known to possess.
Page 369 - Lands nut appropriated or reserved by government for other purposes, and may search therein, either by surface or subterranean prospecting, for mineral deposits, with a view to obtaining a mining location for the same, but no mining location shall be granted until actual discovery has been made of the vein, lode or deposit of mineral or metal within the limits of the location of claim.