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Amer amounts analyses associated average beds bituminous bodies Bull California Canada carbonate carrying cement cent character chiefly clay coal color Colorado contain copper County deposits depth developed distribution district eastern Econ Engrs extent fault feet field fissures formation Geologic gold granite gypsum igneous important Inst iron Italy Jour known Lake latter lead less lignite lime limestone localities lower manufacture mass material metals Michigan miles minerals Mines Mountain natural North obtained occur Ohio origin oxide Pennsylvania phosphate present probably production pyrite quantity quarried quartz range REFERENCES region replacement Rept rocks salt sand sandstone sericite shales showing silicates silver solutions sometimes South stone structure sulphides sulphur supply surface Surv thickness tons U. S. Geol United upper usually Valley vary veins Virginia West western York zinc zone
Page 54 - The exports consist both of anthracite and bituminous coal, the amount of bituminous being the greater in the last few years. They are made principally by rail over the international bridges and by lake and sea to the Canadian provinces. Exports are also made by sea to the West Indies, to Central and South America, and elsewhere. The imports are principally from Australia and British Columbia to San Francisco, from Great Britain to the Atlantic and Pacific coasts, and from Nova Scotia to Atlantic...
Page 472 - Fnhlband is a term originally used by German miners to indicate certain bands of schistose rocks impregnated with finely divided sulphides, but not always rich enough to work.
Page 802 - ... subjected. This left them in the right physical condition to be readily jointed and fissured by the contraction of the diabase. After the deposition of the cobalt-nickel arsenides, which seem to be among the first minerals deposited, the veins appear to have been slightly disturbed, giving rise to cracks and openings in which the silver and later minerals were deposited. Veins which escaped this later, slight disturbance contain little or no silver.
Page 317 - This addition is not as an adulterant, as was the case a few years ago, for it is now appreciated that the addition of barytes makes a white pigment more permanent, less likely to be attacked by acids, and freer from discoloration than when white lead is used alone.
Page 415 - A, acting as confining strata ; /', height of water level in porous beds A, or, in other words, height in reservoir or fountain head ; D, E, flowing wells springing from the porous water-filled bed A.
Page 321 - It has been used in preparing artificial fertilizers, especially in the absorption of liquid manures ; in the manufacture of water glass, of various cements, of glazing for tiles, of artificial stone, of ultramarine and various pigments ; of aniline and alizarine colors ; of paper, sealing wax, fireworks, guttapercha objects, Swedish matches, solidified bromine, scouring powders, papier-mache, and many other articles. There is a large and steadily growing demand for it RECENT VIEWS ON MATTER AND...
Page 52 - ... DISCOVERY. Though La Salle in his hypothecated descent from the headwaters of the Allegheny to the Falls of the Ohio in 1669-703 would have passed by the eastern Kentucky coal field, he left no record indicating that he found coal during these explorations. To Father Hennepin,4 a French Jesuit Missionary, who in 1679 recorded the site of a "cole mine...
Page 760 - Some of the Leadville ores are used in the manufacture of spiegeleisen. All the other localities produce these ores for fluxing only. Manganiferous zinc residuum is obtained from zinc volatilizing and oxidizing furnaces using New Jersey zinc ores. The residuum consists largely of iron and manganese oxide, the zinc having been removed by volatilizing and collected as zinc oxide.