| 单词 | mineral vein |
| 例句 | These reports, according to a paragraph in the Moniteur Belge, are shortly to be published in a more extended form, giving the exact situation, extent, and richness of the principal mineral veins of that country. The Catholic World; Volume I, Issues 1-6 A Monthly Eclectic Magazine 2012-04-05T02:00:40.207Z This aspect of the Culm is found in Saxony, where there are workable coals, in Bohemia, Thuringia, the Fichtelgebirge, the Harz, where the beds are traversed by mineral veins, and in Moravia and Silesia. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z The origin of gold-bearing mineral veins is inseparably connected with that vexed question, the origin of mineral veins generally. The Romance of Industry and Invention 2011-12-19T03:00:43.870Z In mineral districts the fissures have been filled with various spars and ores, forming what are known as mineral veins. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" 2011-09-19T02:00:10.473Z The zeolites occur very commonly in cavities in igneous rocks, and also in mineral veins. Geology 2011-02-20T03:00:12.660Z But there are stones, blocks of stone, rocks, hills and mountains of rock, which contain mineral veins formed of various metals, oxides of uranium, silver, lead, copper, nickel, cobalt and so on. The Secret of Sarek 2011-01-14T03:00:49.903Z It occurs in mineral veins, and when found in large masses, as in Mexico and in the Comstock lode in Nevada, it forms an important ore of silver. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" Should this be ascertained to be a general fact in countries convulsed by earthquakes, it may afford a satisfactory explanation of a common phenomenon in mineral veins. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology It is a mineral of secondary origin, having resulted by the decomposition of copper ores and mispickel in the upper part of mineral veins. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Mention some of the views held with regard to the origin of mineral veins. Geology 2011-02-20T03:00:12.660Z Nor can metallic veins, found plentifully in "primitive" mountains, prove anything, for mineral veins are found in various strata. The World's Greatest Books — Volume 15 — Science Mining is carried on only in the mountains which rise above the lava flood, for the mineral veins are for the most part older than the lava of the plateau. The Western United States A Geographical Reader He says that the lad, when tested, never failed to find either water or mineral veins, the lodes having always been found exactly at the places indicated. The American Architect and Building News, Vol. 27, Jan-Mar, 1890 I am a prospector—a searcher for mineral veins and deposits in the mountains. To The West They thus exposed a broad mineral vein on the side of the mountain. Short Stories of Various Types The mineral veins of Hungary and Transylvania, with their rich deposits of gold and silver, cannot be of older date than the Miocene, while some of them are certainly more recent than the Pliocene. Round About the Carpathians A party of prospectors who were searching carefully over the mountains found several mineral veins with green copper stains crossing this cañon and outcropping in the adjacent hills. The Western United States A Geographical Reader They were successful, and when they had reached a point 140 feet below the surface rock, they struck the mineral vein. Saratoga and How to See It Sometimes a mineral vein, sometimes the temporary "end of the track" of a lengthening railway, forms the nucleus, and around it are first seen the tents of the advance-guard. Lippincott's Magazine of Popular Literature and Science, Vol. XVI., December, 1880. They had enough presence of mind, however, to lay the moss carefully back in place so as to hide the mineral vein. Short Stories of Various Types As a specimen of one of the most interesting mineral veins of this region, it may answer to select the Montague lode at Lake Loon for a specific description. The Atlantic Monthly, Volume 13, No. 79, May, 1864 The mountain foothills are full of mineral veins of copper, gold, silver, lead and molybdonite. A Review of the Resources and Industries of the State of Washington, 1909 Such is the nature of the ore extracted from the mineral veins of this mountain, that it cannot be reduced in the ordinary manner by means of bellows, as is customary in other places. A General History and Collection of Voyages and Travels - Volume 05 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time They are, however, largely intersected by mineral veins, containing silver, gold, and other metals, and they will ultimately doubtless yield a rich harvest to the miner. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Are mineral veins aqueous or igneous in origin? Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889 They, of course, believe in the water-wizard and his forked wand; and their faith is extended to the discovery of mineral veins. Lippincott's Magazine of Popular Literature and Science Volume 12, No. 31, October, 1873 In respect of these, the mineral veins now to be examined are anomalous. Theory of the Earth, Volume 1 (of 4) Strong arguments against the theory that the leaching of superficial igneous rocks has supplied the materials filling mineral veins, are furnished by the facts observed in the districts where igneous rocks are most prevalent, viz.: Scientific American Supplement, No. 446, July 19, 1884 If the mineral vein was capricious, so were the elements, insect pests and the fruit market. Treasure and Trouble Therewith A Tale of California "Mantos".—Origin of mineral veins: their connection with intrusions of Plutonic rocks. The Naturalist in Nicaragua I do not know whether the presence of mineral veins is indicated in other countries as in South Australia by means of surface deposits. Expedition into Central Australia The event of highest generalization or universality, in the form of those mineral veins, is fracture and dislocation. Theory of the Earth, Volume 1 (of 4) In the Quarterly for March, 1880, a paper was published on "The Origin and Classification of Ore Deposits," which treated, among other things, of mineral veins. Scientific American Supplement, No. 446, July 19, 1884 All over the region the rocks are seamed by mineral veins. The Romance of the Colorado River The Story of its Discovery in 1840, with an Account of the Later Explorations, and with Special Reference to the Voyages of Powell through the Line of the Great Canyons Origin of mineral veins: their connection with intrusions of Plutonic rocks. The Naturalist in Nicaragua At such depths it deposits these minerals in the pores of rocks, cementing their grains together, and in crevices and fissures, forming mineral veins. The Elements of Geology It is a mineral vein, or cavity, in which are blended together coal of the most fixed kind, quartz and marmor metallicum. Theory of the Earth, Volume 1 (of 4) Thousands of mineral veins in this and other countries occur in regions remote from eruptive rocks. Scientific American Supplement, No. 446, July 19, 1884 That we should find some mineral veins which split into branches is also natural, for we observe the same in regard to open fissures. The Student's Elements of Geology In regions of folded and broken rocks fissures are frequently found to be filled with sheets of crystalline minerals deposited from solution by underground water, and fissures thus filled are known as mineral veins. The Elements of Geology Earth movements fracturing deeply the rocks of the crust, the intrusion of heated masses, the circulation of underground waters, have all cooperated in the concentration of the metals of mineral veins. The Elements of Geology Hence, in those two different operations, of forming mineral veins, and erecting strata from a lower to a higher place, the principle is the same; for, neither can be done without violent fracture and dislocation. Theory of the Earth, Volume 1 (of 4) The arguments against the theory that mineral veins have been produced by the leaching of superficial igneous rocks are in part the same as those already cited against the general theory of lateral secretion. Scientific American Supplement, No. 446, July 19, 1884 Beaumont, M. E. de, on island in Cretaceous sea. —, on mineral veins. —, on Jurassic plutonic rocks. —, on formation of granite. The Student's Elements of Geology The Steamboat Springs, Nevada, furnish examples of mineral veins in process of formation. The Elements of Geology While fissure veins are the most important of mineral veins, the latter term is applied also to any water way which has been filled by similar deposits from solution. The Elements of Geology Every species of fracture, and every degree of dislocation and contortion, may be perceived in the form of mineral veins; and there is no other general principle to be observed in examining their form. Theory of the Earth, Volume 1 (of 4) It is well known that the waters of all springs are more or less charged with earthy, alkaline, or metallic ingredients derived from the rocks and mineral veins through which they percolate. The Student's Elements of Geology |
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