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noun
Mica  n.  (Min.) The name of a group of minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. They differ widely in composition, and vary in color from pale brown or yellow to green or black. The transparent forms are used in lanterns, the doors of stoves, etc., being popularly called isinglass. Formerly called also cat-silver, and glimmer. Note: The important species of the mica group are: muscovite, common or potash mica, pale brown or green, often silvery, including damourite (also called hydromica and muscovy glass); biotite, iron-magnesia mica, dark brown, green, or black; lepidomelane, iron, mica, black; phlogopite, magnesia mica, colorless, yellow, brown; lepidolite, lithia mica, rose-red, lilac. Mica (usually muscovite, also biotite) is an essential constituent of granite, gneiss, and mica slate; biotite is common in many eruptive rocks; phlogopite in crystalline limestone and serpentine.
Mica diorite (Min.), an eruptive rock allied to diorite but containing mica (biotite) instead of hornblende.
Mica powder, a kind of dynamite containing fine scales of mica.
Mica schist, Mica slate (Geol.), a schistose rock, consisting of mica and quartz with, usually, some feldspar.






Collaborative International Dictionary of English 0.48








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"Mica" Quotes from Famous Books



... vibrations, if left alone, would have a good deal of trouble in passing through the telephone receiver, we must have a condenser to help them out. This is very easily made by gluing a piece of tinfoil about one and a half inches square to each side of a sheet of mica. Then you must have two strips of tinfoil, one extending from each side of the mica. If you haven't any mica, a sheet of ordinary writing paper will do, though ...
— The Radio Boys' First Wireless - Or Winning the Ferberton Prize • Allen Chapman

... in "ite"—apatite, calcite, dolomite, fluorite. But many do not: amphibole, copper (the most common pure metal in rocks), feldspar, galena, gypsum, hornblende, mica, quartz. ...
— Let's collect rocks & shells • Shell Oil Company

... Denner in what I have advanced as the utmost perfection of landscape art—the recent works of Turner—he is welcome to his discovery and his theory. No; Denner-like portraiture would be the endeavor to paint the separate crystals of quartz and felspar in the granite, and the separate flakes of mica in the mica slate,—an attempt just as far removed from what I assert to be great art, (the bold rendering of the generic characters of form in both rocks,) as modern sculpture of lace and button-holes is from the Elgin marbles. Martin has attempted ...
— Modern Painters Volume I (of V) • John Ruskin

... barbarous splendor about these Sun-dances. The tribes gathered for the festival in the long, bright days of the year. They wore ornaments of crystal, quartz, and mica, such as would attract and reflect the rays of the sun. The dance was a glimmering maze of reflections. As it reached its height, gleaming arrows were shot into the air. Above them, in their poetic vision, sat the Sun in his tepee. ...
— The Log School-House on the Columbia • Hezekiah Butterworth

... pillar to pillar across the hall, and in the centre of the eastern wall they were attached to a large shell-shaped canopy extending over the throne of the king, which was decorated with pieces of green and blue glass, of mother of pearl, of shining plates of mica, and ...
— Uarda • Georg Ebers

... almost universal on the hills and mountains, and always nutritious, even in its dry state. We passed on the way masses of granite on the slope of the spur, which was very much weathered and abraded. This is a white feldspathic granite, with small scales of black mica; smoky quartz and garnets appear to constitute this ...
— The Exploring Expedition to the Rocky Mountains, Oregon and California • Brevet Col. J.C. Fremont

... must take a caddice larva from its house and put it in a saucer of water with fine bits of mica, which you know is another name for the isinglass that makes the little windows ...
— The Insect Folk • Margaret Warner Morley

... Mica in Stove Doors—To clean the mica in stove doors, rub it with a soft cloth dipped in equal parts of ...
— Fowler's Household Helps • A. L. Fowler

... various altitudes; but the same principle is applicable to other light sources. The sensitive part of the apparatus consists of a cylinder formed of 38 disks of copper, isolated from each other by as many disks of mica. The latter being of smaller diameter than the copper disks, the annular spaces between the two are filled with selenium, by the simple process of rubbing a stick of this substance over the edges, and afterward ...
— Scientific American Supplement, No. 484, April 11, 1885 • Various

... N.Y., was granted a United States patent on a family coffee roaster having a mica window to enable the operator to observe the coffee while ...
— All About Coffee • William H. Ukers

... France, where he told a truly magnificent tale concerning a truly magnificent country. Expeditions for Canada were everywhere set afoot. Even Queen Elizabeth, of England, sent Frobisher on a voyage of discovery, but he only discovered a foreland and tons of mica, which he mistook for golden ore. Martin Frobisher was ruined. His was a ruinous speculation. Talc or mica did not pay the expense of a nine month's voyage with fifteen ships. But all that was then sought for is now found in Canada—and more. To obtain much gold, however, ...
— The Rise of Canada, from Barbarism to Wealth and Civilisation - Volume 1 • Charles Roger

... carpenters, fishermen and sailors, and above all, from the old boulders strewed along the shores of the Cromarty Firth. With a big hammer which had belonged to his great-grandfather, an old buccaneer, the boy went about chipping the stones, and accumulating specimens of mica, porphyry, garnet, and such like. Sometimes he had a day in the woods, and there, too, the boy's attention was excited by the peculiar geological curiosities which came in his way. While searching among the rocks on the beach, he was sometimes asked, in irony, ...
— How to Get on in the World - A Ladder to Practical Success • Major A.R. Calhoon

... received flannel hoods, with mica windows, that had been dipped in the same solution, and these gave place in turn to the present gas helmet—a fearsome-looking affair, which, however, ...
— From the St. Lawrence to the Yser with the 1st Canadian brigade • Frederic C. Curry

... sudden, surprised by a touch on his arm, he turned to see through the mica windows of the wind-mask the eyes of the aviator informed with importunate doubt. Infinitely mystified and so an easy prey to sickening fear lest something were going wrong with the machine, Lanyard shook his head to indicate lack of comprehension. With ...
— The Lone Wolf - A Melodrama • Louis Joseph Vance

... to me the fellow was trying to get at something—in fact, pumping me. He alluded constantly to Europe, to the people I was supposed to know there—putting leading questions as to my acquaintances in the sepulchral city, and so on. His little eyes glittered like mica discs—with curiosity—though he tried to keep up a bit of superciliousness. At first I was astonished, but very soon I became awfully curious to see what he would find out from me. I couldn't possibly imagine what I had in me to make it worth his while. It was very ...
— Heart of Darkness • Joseph Conrad

... thinner thorns the bell-shaped nests of the Loxia depend, waving in the breeze, and the wood resounds with the cries of bright-winged choristers. The torrent-beds are of the clearest and finest white sand, glittering with gold-coloured mica, and varied with nodules of clear and milky quartz, red porphyry, and granites of many hues. Sometimes the centre is occupied by an islet of torn trees and stones rolled in heaps, supporting a clump of thick jujube or tall acacia, ...
— First footsteps in East Africa • Richard F. Burton

... torches being extinguished it appears as if stars innumerable were glittering in the sky. On a stone being thrown upwards, it quickly strikes the roof, and it is soon seen that these seeming stars are produced by pieces of mica embedded in the roof, on which the light of a lantern being thrown in a peculiar way is brightly reflected. Although the caverns seem to be of immense height, the ceiling in most parts is not more than thirty feet from the ground. In the centre of one cavern, a regular hill rises from the ground, ...
— The Mines and its Wonders • W.H.G. Kingston

... sun, bears cultivation and shows the native growth of the Norwegian flora. Here the expanse of the fiord is broad enough to allow the sea, dashed back by the Falberg, to spend its expiring force in gentle murmurs upon the lower slope of these hills,—a shore bordered with finest sand, strewn with mica and sparkling pebbles, porphyry, and marbles of a thousand tints, brought from Sweden by the river floods, together with ocean waifs, shells, and flowers of the sea driven in by tempests, whether of the Pole ...
— Seraphita • Honore de Balzac

... These large plates of ore, were probably silver-coloured mica; and the golden-coloured copper in the text may have ...
— A General History and Collection of Voyages and Travels, Vol. 5 • Robert Kerr

... he had with him; it was about twenty-three ounces weight, and in small flakes. The man stated that he was eight days getting it, but Captain Fulsom hardly believed this. He says that he saw some of this gold a few weeks since, and thought it was only "mica," but good judges have pronounced it to be genuine metal. He talks, however, of paying a visit to the place where it is reported to come from. After he was gone Bradley stated that the Sacramento settlements, which Malcolm wished to visit, were in the neighbourhood of the American Fork, ...
— California • J. Tyrwhitt Brooks

... the village of Akeville, where the Loudons lived, was a mica mine, which had recently been bought, and was now worked by a company from the North. This mica (the semi-transparent substance that is set into stove doors) proved to be very plentiful and valuable, and the company had a great deal of business on their hands. It ...
— What Might Have Been Expected • Frank R. Stockton

... disseminated in its mass, that of Cape Finisterre probably contains micaceous iron. In the mountains of the Upper Palatinate there are granitic rocks in which crystals of micaceous iron take the place of common mica. ...
— Equinoctial Regions of America • Alexander von Humboldt

... to drive away any natural feeling of loneliness at the parrot's absence, I set down notes as concisely as possible of what had occurred to me so far. For this purpose I used the point of my knife and thin slabs of mica, wishing to save the small stock of memorandum paper in my note-book and journals as much as I could. At other times I had used bark and similar things to write on, but the mica was more durable, and more easily stowed away. It was my intention ...
— St. Nicholas, Vol. 5, No. 2, December, 1877 • Various

... windows and numerous windy cracks in the floor, we felt a little comfort before an immense fire kindled in the open chimney. Our provisions were already adamantine; the meat was transformed into red Finland granite, and the bread into mica-slate. Anton and the old Finnish landlady, the mother of many sons, immediately commenced the work of thawing and cooking, while I, by the light of fir torches, took the portrait of a dark-haired, black-eyed, olive-skinned, big-nosed, thick-lipped youth, who gave his name as Eric Johan Sombasi. ...
— Northern Travel - Summer and Winter Pictures of Sweden, Denmark and Lapland • Bayard Taylor

... as always. Yellow landscape, spatter cones, glittering streaks that might be metal in the volcanic ground—created by dusting ground mica on wet glue to catch the reflection of the ...
— Question of Comfort • Les Collins

... brink. It is composed of a characteristic granitic gneiss of a pale flesh-color, streaked with black, that, in the hand specimen, can scarce be distinguished from a true granite, but which, viewed in the mass, presents, in the arrangement of its intensely dark mica, evident marks of stratification, and which is remarkable, among other things, for furnishing almost all the very large boulders of this part of the country. Unlike many of the granitic gneisses, it is a fine solid ...
— The Cruise of the Betsey • Hugh Miller

... they here work scarcely an appreciable effect; there cause exfoliations of the surface, and a resulting heap of debris and boulders; and elsewhere, after decomposing the feldspar into a white clay, carry away this and the accompanying quartz and mica, and deposit them in separate beds, fluviatile and marine. When the exposed land consists of several unlike kinds of sedimentary strata, or igneous rocks, or both, denudation produces changes proportionably more heterogeneous. The formations being disintegrable in different degrees, ...
— Essays: Scientific, Political, & Speculative, Vol. I • Herbert Spencer

... and we add certain festive touches in the way of vines and cut flowers loosely and gracefully disposed in glass or silver bowls and vases. At the four sides of the centerpiece go the dainty glass candlesticks, which cost 35 cents apiece, coming up to 91 cents with the candle lamp, candle, mica chimney, and shade complete, the shade matching the flowers in color. The lesser light which thus rules the night casts a witching glamour over the table, shadowing imperfections, softening features, warming heart cockles, and loosening tongues. ...
— The Complete Home • Various

... candida, longa, Recta est; haec ego sic singula confiteor: Tota illud formosa nego: nam multa venustas; Nulla in tam magno est corpore mica salis. Lesbia formosa est quae, cum pulcherrima tota est, Tum omnibus ...
— Lucasta • Richard Lovelace

... fused alone, produce beads. Of these minerals the following produce beads with soda: the zeolites, spodumene, soda-spodumene, labrador, scapolite, sodalite (Greenland), elaeolite, mica from primitive lime-stone, black talc, acmite, krokidolite, lievrite, cronstedtite, garnet, cerine, helvine, gadolinite, boracic acid, hydroboracite, tincal, boracite, datholite, botryolite, axinite, lapis ...
— A System of Instruction in the Practical Use of the Blowpipe • Anonymous

... miles we had passed several little gullies, and reached the foot of other hills, where a few Australian pines were scattered here and there. These hills have a glistening, sheening, laminated appearance, caused by the vast quantities of mica which abounds in them. Their sides are furrowed and corrugated, and their upper portions almost bare rock. Time was lost here in unsuccessful searches for water, and we departed to another range, four or five miles farther on, and apparently ...
— Australia Twice Traversed, The Romance of Exploration • Ernest Giles

... of gelatin, or glue, prepared from the swimming-bladders of fishes, used as a cement, and also as an ingredient in food and medicine. The name is sometimes applied to a transparent mineral substance called mica. ...
— A Treatise on Domestic Economy - For the Use of Young Ladies at Home and at School • Catherine Esther Beecher

... the north-eastward, in a cloudless pool of gathering light and with all its nocturnal illuminations still blazing, was Berlin. The left finger of the steersman verified roads and open spaces below upon the mica-covered square of map that was fastened by his wheel. There in a series of lake-like expansions was the Havel away to the right; over by those forests must be Spandau; there the river split about the Potsdam island; ...
— The World Set Free • Herbert George Wells

... dressed any old way in her tatters, with a swollen blue face, was lying there. Her left eye was closed; while the right was staring and gazing immovably and frightfully, having already lost its sparkle and resembling mica that had lain for a ...
— Yama (The Pit) • Alexandra Kuprin

... as it is always carefully separated from the limestone as being useless, and thrown aside, or in some instances, when of peculiar beauty, sold as specimens. The variety of serpentine known as marmolite, which is made up of numberless plates of the mineral packed together similar to mica, but of the green color of the serpentine picolite, or fibrous serpentine, also frequently occurs of a light grass green color, and is a very ...
— Scientific American Supplement, No. 415, December 15, 1883 • Various

... box-timbered, and much of the woodwork was shaken down by the blasts. The sinking through stiff clay, stained with iron, cobalt, manganese, and cinnabar, was reported easy. But where the hanging and foot walls should have been, fragments of clay, iron, and mica-slate showed that the former lie still deeper. My companion proposed a descent into the shaft by bucket and windlass. I declined, greatly distrusting such deserted pits, especially in this region, where they appear unusually liable to foul. Two days afterwards a Kruboy went down and was brought ...
— To The Gold Coast for Gold, Vol. II - A Personal Narrative • Richard Francis Burton and Verney Lovett Cameron

... building, like those we have seen in Mexico and Maya. Many enclosures contain more than fifty acres of land; and one embankment is fifty miles long. Among the relics associated with those works are articles of pottery, knives, and copper ornaments, hammered silver, mica, obsidian, pearls, beautifully sculptured pipes, shells, and stone implements. The mounds found in some of the Gulf States seem to confirm a theory that the mound-builders were the ancestors of the Choctaw Indians and their allies, and had ...
— The Story of Extinct Civilizations of the West • Robert E. Anderson

... reserves in the world), iron ore, manganese, mica, bauxite, titanium ore, chromite, natural gas, diamonds, petroleum, ...
— The 2002 CIA World Factbook • US Government

... of immense blocks of common granite composed of white felspar and quartz and black mica; and it appeared to form the western extremity of a low range. It was indeed a welcome sight to us all after traversing for several months so much flat country; and to me it was particularly interesting for, from its summit, I expected to obtain an extensive ...
— Three Expeditions into the Interior of Eastern Australia, Vol 2 (of 2) • Thomas Mitchell

... large tubular flowers.[*] The ACACIA FALCATA appeared also on the sandstone ground above the gullies, and a broad-leaved form of the EREMOPHILA MITCHELLII. The moon shone brightly, and the rock being full of silver mica, the splendour of the scene imparted to my eye and mind then a degree of gratification far beyond any associations of the richest furniture of a palace. We found it impossible to get our horses to the water; but we hit upon an expedient which answered even ...
— Journal of an Expedition into the Interior of Tropical Australia • Thomas Mitchell

... wharf, and George and I had arrived there ourselves, we found also waiting for the steamer several prospectors who were going to "The Labrador," as the country is known to the Newfoundlanders, to look for gold, copper, and mica. All of them apparently were dreaming of fabulous wealth. None, I was told, was going farther than the lower coast; they did not attempt to disguise the fact that they feared to venture far ...
— The Lure of the Labrador Wild • Dillon Wallace

... enormous quantity of ready, green, crisp money for their thirty-acre patch of cleared land, mentioning, as an excuse for such a mad action, some irrelevant and inadequate nonsense about a bed of mica underlying the said property. ...
— Whirligigs • O. Henry

... this view, it is cited that diaphragms much too rigid, or charged with irregularly distributed masses over the surface, or pierced with holes, or otherwise evidently unfitted for the purpose, are available for transmission. They will likewise serve when feathers, wool, wood, metals, mica, and other substances to the thickness of four inches are placed between the diaphragm and the source of vibratory movement. The magnetic field does not alter these relations in any way. The real diaphragm may be removed altogether. It is sufficient to replace it by a few grains of iron filings thrown ...
— Scientific American Supplement, No. 586, March 26, 1887 • Various

... can be ordinary Leyden jars or glass plates coated with tin or copper foil and set into a frame, or they can be built up of mica and sheet metal embedded in an insulating composition. The glass plate condensers are the cheapest and will serve your purpose well, especially if they are immersed in oil. Tuning coils, sometimes called ...
— The Radio Amateur's Hand Book • A. Frederick Collins

... a good sort in some ways, but a very ignorant man. I showed him some of my specimens the other day, and he thought them granitic, when they were really Silurian mica schist of some kind," put in Mrs. Sykes, who never could bear unqualified praise. "Still, on the whole, the Americans are less ignorant than ...
— Lippincott's Magazine, August, 1885 • Various

... explained, feeling now at liberty to talk since he had delivered his call for help. "You see, I talk into this transmitter. The simplest transmitter for this purpose is a plane mirror of flexible material, silvered mica or microscope glass. Against the back of this mirror my voice is directed. In the carbon transmitter of the telephone a variable electrical resistance is produced by the pressure on the diaphragm, based on the fact that carbon is not as good a conductor of ...
— Guy Garrick • Arthur B. Reeve

... verse is another matter. It is not difficult to test a diaphragm carefully through a small range, but to be certain of its action at all the pitches and qualities of the speaking voice is impossible. A stable diaphragm, glass or mica, would have to be used, and careful corrections made for ...
— Harvard Psychological Studies, Volume 1 • Various

... the Carpathians consist of various older strata—secondary, primary, and metamorphic—and the rocks of which they are composed are limestone, marble, schist (mica-schist and slate), and gneiss. On the summits are found conglomerates formed of quartz, limestone, ...
— Roumania Past and Present • James Samuelson

... steel, some makers recommend using ground mica, charcoal, lime, fine dry ashes or lake sand as a packing in the annealing boxes. Mixtures of one part charcoal, one part lime and three parts of sand are also suggested, or two parts of ashes may be substituted for the one part ...
— The Working of Steel - Annealing, Heat Treating and Hardening of Carbon and Alloy Steel • Fred H. Colvin

... unknown and undeveloped territory. Besides gold, silver and copper, immense deposits of salt, borax, lime, platinum, sulphur, soda, potash-salts, cinnabar, arsenical ores, zinc, coal, antimony, cobalt, nickel, nitre, isinglass, manganese, alum, kaolin, iron, gypsum, mica and graphite exist ...
— Reno - A Book of Short Stories and Information • Lilyan Stratton

... something which he held aloft was nothing but a bit of discolored mica that had reflected the ...
— The Black Buccaneer • Stephen W. Meader

... No. 16," Mica schist from El-Wedge. This mica-schist undergoing decomposition from weathering action, mixed with small lumps of quartz, was assayed with the following results :— Gold (per statute ton). . . . .6 grains. Silver. . . . . . . . . . . . ...
— The Land of Midian, Vol. 1 • Richard Burton

... is a ground in the cutout, or between the cutout and the generator, the generator will very likely be unable to generate (if a "one-wire" system is used on the car). If there is some defect in the generator-such as dirty commutator, high mica, brushes not touching, commutator dirty, or loose brushes, brushes too far from neutral, grounded brushes, brushes not well ground in, wrong type of brushes, grounded commutator or armature windings, short-circuited commutator or armature windings, open-circuited armature windings, grounded ...
— The Automobile Storage Battery - Its Care And Repair • O. A. Witte

... were now of gneiss and mica-schist, and the mica was so abundant as to cause many a crag and heap of shale to glitter in the sun, as though there had been a mighty shattering of mirrors here into little particles which had fallen upon everything. There was, however, no lack of contrast. To the shining ...
— Two Summers in Guyenne • Edward Harrison Barker

... Australian gold, half escaped its chignon and lay across her shoulders. She danced light as the breeze up the marble stairway, and at its climax the spotlight focused on her, covering her with the sheen of mica; then just as lightly down the steps again, so rapidly that her hair was tossed outward in a fairy-like ...
— Every Soul Hath Its Song • Fannie Hurst

... metallic base of mica, feldspar, slate, and clay. Professor Dana says: "Nearly all the rocks except limestones and many sandstones are literally ore-beds of the metal aluminum." It appears in the gem, assuming a blue in the sapphire, green in the emerald, yellow in the topaz, red in the ruby, brown in the emery, ...
— Scientific American Supplement, Vol. XXI., No. 531, March 6, 1886 • Various

... Gradually Jed came to enjoy seeing her there, to see the windows of the old house open, to hear voices once more on that side of the shop, and to catch glimpses of Babbie dancing in and out over the shining mica ...
— Shavings • Joseph C. Lincoln

... recording stylus, actuated by a vibrating mica diaphragm, cuts the wax from the strip. In reproducing, a dull, loosely mounted stylus, attached to a rubber diaphragm, carried sounds through an ear tube ...
— Development of the Phonograph at Alexander Graham Bell's Volta Laboratory • Leslie J. Newville

... And, say, we sure have got better prospects than you're figgering. You see, I've got a claim there's no one else working on. And sure there's minerals on it. Copper—or leastways it looks like copper, and there's mica, an' lots—an' lots of stuff. I'll sure find gold in that claim. It's just a matter of keepin' on. And I'm going to. And then, when we find it, what a blow-out we'll have. We'll get automobiles and houses, and—and we'll have ...
— The Twins of Suffering Creek • Ridgwell Cullum

... enormous bears, distinguished by the appellations of Innocence, and Mica Aurea, could alone deserve to share the favor of Maximin. The cages of those trusty guards were always placed near the bed-chamber of Valentinian, who frequently amused his eyes with the grateful spectacle of seeing them tear and devour the bleeding limbs of the malefactors who were abandoned ...
— The History of The Decline and Fall of the Roman Empire - Volume 2 • Edward Gibbon

... effect struck me at first (in the brilliant sunshine which alone kept me from being nipped with cold) as puzzling, but in a moment I had solved the "jewel mystery" of the mountains. The rocks were of porphyry, and marble, and granite, spangled with mica; and over all spread in patches a lichen of rose, and green, and yellow, like chipped ...
— The Princess Passes • Alice Muriel Williamson and Charles Norris Williamson

... of these rivers or torrents, even when they have no communication with the high mountains, are filled with fragments of granite and shistose mica; but the hills themselves are in general composed of clay, intermixed with various proportions of sand, mica, and gravel. This mixture contains many masses of rock, and is disposed in strata, that are either horizontal, or dip towards the north with an angle less than 25 degrees. In many ...
— An Account of The Kingdom of Nepal • Fancis Buchanan Hamilton

... the body, its upper part gray or black or yellow according to the upper soil and herbs, heather, bent, moss, &c.; the belly and feet, red or tan or light fawn, according to the nature of the deep soil, be it ochrey, ferruginous, light clay, or comminuted mica slate. And wonderfullest of all, the DOTS of TAN above the eyes—and who has not noticed and wondered as to the philosophy of them?—I saw made by the two fore feet, wet and clayey, being put briskly up to his ...
— Spare Hours • John Brown

... set? Copper wires, tinfoil, glass plates, sheets of mica, metal, and wood. Where does it get its ability to work—that is, where does the "energy" come from which runs the set? From batteries or from dynamos. That much you know already, but what is the real reason that we can use copper wires, metal plates, audions, ...
— Letters of a Radio-Engineer to His Son • John Mills

... suso L' altro leggier tien giuso, Ma convien levar mano Non mica com soleano, Ma per contraro, e face Cosi 'l guidar ...
— The Travels of Marco Polo Volume 1 • Marco Polo and Rustichello of Pisa

... considerable surface insulated from each other, a rapidly varying current actually may move one or both of the conductors. Ordinarily these are of thin sheet metal (foil) interleaved with an insulating material, such as paper or mica. Voice currents can vibrate the metal sheets in a degree to cause the condenser to speak. These condenser methods of ...
— Cyclopedia of Telephony & Telegraphy Vol. 1 - A General Reference Work on Telephony, etc. etc. • Kempster Miller

... of the Dutch to reach China and Japan by the north-east thus came about. Of this voyage we know only that Brunel endeavoured without success to sail through Yugor Schar, and that his vessel, heavily laden with furs, plates of mica, and rock-crystal, was wrecked on the way home at the mouth of the Petchora (Beschryvinghe vander Samoyeden Landt in Tartarien, &c. Amsterdam, 1612. S. Muller's Photolithographic Reproduction, 1878). The mica and rock-crystal were undoubtedly brought from the Ural, as no useful ...
— The Voyage of the Vega round Asia and Europe, Volume I and Volume II • A.E. Nordenskieold

... get them out. One of the lavas of the Leucite Hills, that named from its native state "Wyomingite," gives fifty-seven per cent. of its potash in a soluble form on roasting with alunite—but this costs too much. The same may be said of all the potash feldspars and mica. They are abundant enough, but until we find a way of utilizing the by-products, say the silica in cement and the aluminum as a metal, they cannot ...
— Creative Chemistry - Descriptive of Recent Achievements in the Chemical Industries • Edwin E. Slosson

... cheerful coal fire glowed through its mica windows, and in front of the doctor's leather chair, were his slippers, and over it was thrown a brightly colored ...
— Purple Springs • Nellie L. McClung

... cry of love for the light, is such a deep and frenzied cry of love for the golden thing we call the Day, and that all thirst to feel again: the pine on its bark, the tortuous roots in woodland paths on their mosses, the feather-grass on each delicate spray, the tiniest pebble in its tiniest mica flake; it is so wonderfully the cry of all that misses and mourns its colour, its reflection, its flame, its coronet, its pearl; the beseeching cry of the dew-washed meadow begging for a wee rainbow at every grass-tip, of the forest begging a burst ...
— Chantecler - Play in Four Acts • Edmond Rostand

... ornament six inches long. In sinking the shaft, at thirty-four feet above the first, or bottom vault, a similar one was found, enclosing a skeleton which had been decorated with a profusion of shell beads, copper rings, and plates of mica." ...
— Four Months in a Sneak-Box • Nathaniel H. Bishop

... beds, &c. Then went on four pauses over the portage and encamped in sight of a pond. The next day we accomplished ten pauses, a hard day's work. We encamped near a boulder of granite of the drift stratum, which contained brilliant plates of mica. Water scarce and bad. Our tea was made of a brown pondy liquid, which looked like water in a ...
— Personal Memoirs Of A Residence Of Thirty Years With The Indian Tribes On The American Frontiers • Henry Rowe Schoolcraft

... of this level plain is traversed, and I find myself gazing curiously at a range of mica-flecked hills off to the right. These hills present a very curious appearance; the myriads of flakes of mica scattered all about glitter and glint in the bright sunlight as if they might be diamonds, ...
— Around the World on a Bicycle Volume II. - From Teheran To Yokohama • Thomas Stevens

... strong enough to bear it now." Stacy drew the blanket from the vague pile that stood in the corner, and discovered a deep tin prospecting-pan. It was heaped with several large fragments of quartz. At first the marble whiteness of the quartz and the glittering crystals of mica in its veins were the most noticeable, but as they drew closer they could see the dull yellow of gold filling the decomposed and honeycombed portion of the rock as if still liquid and molten. The eyes of the party sparkled like the mica—even those of Barker and Stacy, who were ...
— The Three Partners • Bret Harte

... wide silk sleeves falling back—his emaciated yellow hands. From under his dark eyelids there was a glitter of vision like the sheen on mica... Taou Yuen ...
— Java Head • Joseph Hergesheimer

... form the cores of the ancient crystalline masses within the littoral zone from Algiers to Bona. They consist of gneiss, mica-schist, quartzites, crystalline limestones and conglomerates. Primary deposits are doubtfully represented by the detached fragments of unfossiliferous strata of Traras, Blida and east of Orleansville. Carboniferous and Permian strata are possibly ...
— Project Gutenberg Encyclopedia

... The banks of the river (which is probably the Gilbert of Leichhardt) are well grassed, and a dense line of melaleuca, leucodendron, flooded-gum, and morinda, mark its course through the plain; but being divided into many channels its size is difficult to ascertain. Considerable quantities of mica are mixed with the soil on its banks, which indicates that it rises in country of primary formation. Two kangaroos, some wallabies, and pink and sulphur-crested white cockatoos ...
— Journals of Australian Explorations • A C and F T Gregory

... are two of them, made of thick mica. One is directly in the front end, through which my telescope will look. The other is in the port-hole in the rear end. Each window is provided with an outer shutter of asbestos, which can be closed in case of great heat or cold. You will notice the two compartments can be separated by ...
— Pharaoh's Broker - Being the Very Remarkable Experiences in Another World of Isidor Werner • Ellsworth Douglass

... ladder from the courtyard to the first terrace, and thence descending by another ladder through a hole in the roof. The upper stories, being safer from attack, are more liberally supplied with doors and windows, the latter being sometimes glazed with plates of mica. At present, panes of glass are also used, though they were pointed out to us as special luxuries. At night, and in times of danger, the ladders in these pueblos used always to be drawn up after the ...
— John L. Stoddard's Lectures, Vol. 10 (of 10) - Southern California; Grand Canon of the Colorado River; Yellowstone National Park • John L. Stoddard

... opened a thick, metal door into another hall—and she stood transfixed, looking through a mica wall at the emptiness of space pinpointed with its billions of stars. This was the reality of the charts she had seen in the astronomy text: that knowledge alone saved her sanity. She had believed it when ...
— The Guardians • Irving Cox

... of immense fields of snow, but, being themselves too steep for snow to rest upon, form red, bare, and inaccessible peaks, which even the chamois scarcely dares to climb. Their bases appear sometimes abutted (if I may so speak) by mica slate, which forms the southeast side of the Valley of Chamonix, whose flanks, if intersected, might appear as (in fig. 72), a, granite, forming on the one side (B) the Mont Blanc, on the other (C) the Mont ...
— On the Old Road, Vol. 2 (of 2) - A Collection of Miscellaneous Essays and Articles on Art and Literature • John Ruskin

... and 3 of the charts) on the first only once. I there found nothing of much interest, except some very thick beds of conglomerate superimposed upon a compact basaltic-looking rock. Number 3, on the other hand, consists of mica slate, much contorted, and altered from its usual appearance, and containing lead ore (galena) with several veins of quartz, one of which, about two feet in thickness, traverses the island from side ...
— Narrative Of The Voyage Of H.M.S. Rattlesnake, Commanded By The Late Captain Owen Stanley, R.N., F.R.S. Etc. During The Years 1846-1850. Including Discoveries And Surveys In New Guinea, The Louisiade • John MacGillivray

... fragile, like shale crumbling away from under the limestone, thus strengthening the opinion that there has been for many ages a continual retrocession of the Great Falls. Around Lake St. Clair, masses of granite, mica slate, and quartz are found in abundance. The level shores of Lake Huron offer little geological variety; secondary limestone, filled with the usual reliquiae, is the general structure of the coast, but detached blocks of granite and other primitive rocks are occasionally ...
— The Conquest of Canada (Vol. 1 of 2) • George Warburton

... hillside, rising sheer, like a Rhine rock clothed with moss and heather, gullied like it, again, by sharp ridges of schist and mica sending down, here and there, white foaming rivulets to which a little meadow, always watered and always green, serves as a cup; farther on, beyond the picturesque chaos and in contrast to this wild, solitary nature, the ...
— Sons of the Soil • Honore de Balzac

... and highly preserved skeletons, which, however, were not those of Mound-builders, but rather of the Indians who were buried there long after the mounds were abandoned. One altar was covered by a layer of opaque mica, which must have been brought from a great distance. In the centre of the basin was found, besides numerous other relics, a large heap of burned human bones, which would indicate it an altar of human sacrifice. From other evidences, we may safely conclude that ...
— Mound-Builders • William J. Smyth

... hat in hand, wholesomely honest in his homely ruggedness, a flush of embarrassment tinging his face. The sun in his short hair seemed laughing, picking out little flecks of gold as mica flakes in the ...
— Trail's End • George W. Ogden

... but that the place where you were wicked is the Hades to which you are doomed for ages.' I thought and thought till I began to feel the air alive about me, and was enveloped in the vapours that dim the eyes of those who strain them for one peep through the dull mica windows that will not open on the world of ghosts. At length I cast my fancies away, and fled from them to the library, where the bodily presence of Laetitia made the world of ghosts appear ...
— The Portent & Other Stories • George MacDonald

... work, representing flowers, birds, arabesques, and other figures. Two rooms without windows are exclusively destined to show the effects of illumination. The walls and the arched roof are covered with mica slate in small silvered frames; fountains splash over glass walls, behind which lights can be arranged, and jets of water are thrown up in the centre of the room. Even without lights, it glittered and sparkled most marvellously; what must be the effect when innumerable ...
— A Woman's Journey Round the World • Ida Pfeiffer

... stones, which he had collected in his pursuit of the various sciences that made them a specialty,—placed ponderous tomes open at some curious or amusing story of otherwise forgotten ages, to arrest the fancy of elegant literati,—exhibited rare and grotesque curiosities, the glittering mica that he had picked up in his long researches, as toys for these idlers ...
— Atlantic Monthly, Volume 8, Issue 49, November, 1861 • Various

... of quartz sand are either sharp cornered or else rounded pieces of stone of quartz, occasionally mixed with grains of other amorphous pieces of silica—such as horn stone, silicious slate, carnelian, etc.; again, with lustrous pieces of mica, or red and white pieces of feldspar. The gravel used for a tar paper roof must be of a special nature and be prepared for the purpose. The size of its grains must not exceed a certain standard—say, the size ...
— Scientific American Supplement, No. 821, Sep. 26, 1891 • Various

... kind of crystals, LEAF-crystals, or FOLIATED crystals, though I show you the form in gold first only to make a strong impression on you, for gold is not generally or characteristically, crystallized in leaves; the real type of foliated crystals is this thing, Mica; which if you once feel well and break well, you will always know again; and you will often have occasion to know it, for you will find it everywhere ...
— The Ethics of the Dust • John Ruskin

... short interval, Trimalchio gave orders for the dessert to be served, whereupon the slaves took away all the tables and brought in others, and sprinkled the floor with sawdust mixed with saffron and vermilion, and also with powdered mica, a thing I had never seen done before. When all this was done Trimalchio remarked, "I could rest content with this course, for you have your second tables, but, if you've something especially nice, why bring it on." Meanwhile ...
— The Satyricon, Complete • Petronius Arbiter

... quartz in the unbroken feldspar. The aspect of the rock at this stage is that of a gneiss with rather indefinite banding. Further action reduced the rock to a collection of angular and rounded fragments of granite, quartz, and feldspar in a matrix of quartz and mica, the mica lapping around the fragments and rudely parallel to their surfaces. The last stage was complete pulverization of the fragments and elongation into lenses, the feldspathic material entirely recomposing ...
— History and Comprehensive Description of Loudoun County, Virginia • James W. Head

... had received a wetting. The dark, shiny surface betrayed that fact, and it was surprising how real water, when you did see it on a lake subject to mirage, was so unmistakably real. It is like putting flakes of real gold beside flakes of mica; you are ready to swear that the mica is gold—until you see the real gold beside it. So Casey knew at a glance that half of Red Lake was wet, and that the shiny patches here and there were not mirage pictures but shallow pools of water. ...
— Casey Ryan • B. M. Bower

... scanty fare. We were teased by sand-flies this evening, although the thermometer did not rise above 45 deg.. The country through which we had travelled for some days consists principally of granite, intermixed in some spots with mica-slate, often passing into clay-slate. But the borders of Lower Carp Lake, where the gneiss formation prevails, are composed of hills, having less altitude, fewer precipices, and more rounded summits. The valleys are less fertile, containing a gravelly soil and fewer trees; so that the country ...
— Narrative of a Journey to the Shores of the Polar Sea, in the Years 1819-20-21-22, Volume 1 • John Franklin

... with a thin white layer (now of course turning into gray, yellow, and flesh-red) much resembling our plaster, but whose composition I am unable to determine. (Specimens of the mud, containing small gravel and minute particles of mica, are sent with the other collections, also fragments of ...
— Historical Introduction to Studies Among the Sedentary Indians of New Mexico; Report on the Ruins of the Pueblo of Pecos • Adolphus Bandelier

... these cavities are commonly lined with the crystal corresponding to the constituent substances of the stone, viz. quartz, feld-spar, and mica or talk. M. de Saussure, (Voyages dans les Alpes, tom. ii. sec. 722.), says, "On trouve frequemment des amas considerables de spath calcaire, crystallise dans les grottes ou se forme le crystal de roche; quoique ces grottes soient ...
— Theory of the Earth, Volume 1 (of 4) • James Hutton

... being necessary. The rabbit is carried to the He-i-i-que (or Kiva of the North) by the [t]S[i]-[t]S[i] [t]ki, who, after skinning the rabbit, fills the skin with cedar bark; a pinch of meal is placed for the heart and the eye sockets are filled with mica; a hollow reed is passed through the inside filling to the mouth. The sixth day the inmates of the kivas again go for wood; the seventh day large T[e]-l[i]k-tk[i]-n[a]-we are made of eagle plumes; the eighth day is consumed in decorating the masks to be worn. As these people have not ...
— The Religious Life of the Zuni Child - Bureau of American Ethnology • (Mrs.) Tilly E. (Matilda Coxe Evans) Stevenson

... the sort that shuts up when you touch it. Draw your finger down the middle of the stem, and see if the leaves don't curl up," said Dan, who was examining a bit of mica. ...
— Little Men - Life at Plumfield With Jo's Boys • Louisa May Alcott

... to a person wholly unacquainted with these things, will he understand you? Talk to him of stamens, pistils, calyxes; of monandria, diandria, triandria; of gypsum, talc, calcareous spar, quartz, topaz, mica, garnet, pyrites, hornblende, augite, actynolite; of hexahedral, prismatic, rhomboidal, dodecahedral; of acids and alkalies; of oxygen, hydrogen, nitrogen and carbon; of the configuration of the ...
— Lectures on Language - As Particularly Connected with English Grammar. • William S. Balch

... There is nothing that grows so low but that this scythe will travel near enough to the ground to harvest it. There is nothing so minute but it is big enough to mirror the holiness of God. The tiniest grain of mica, upon the face of the hill, is large enough to flash back a beam; and the smallest thing we can do is big enough to hold the bright light of holiness. 'All'! Ah! If our likeness to God does not show itself in trifles, what in the name of common sense is there left for ...
— Expositions of Holy Scripture - Ephesians; Epistles of St. Peter and St. John • Alexander Maclaren

... absently putting down a coffeepot on a stack of microscope slides. "Cynodon dactylon'll eat gold and banknotes, drillpresses and openhearths as readily as quartz and mica, dead bodies ...
— Greener Than You Think • Ward Moore

... property of cohesion seems to be a quality stored within the atom itself, in many cases similar to magnetism, having powerful attraction in some directions and very little or none in others. A crystal of mica, for instance, or gypsum may be divided to any degree of thinness, but is very difficult to even break. This property of crystals is termed cleavage. Cohesion and crystallization are affected variously by various circumstances, such as heat or its absence, motion ...
— Scientific American Supplement, No. 344, August 5, 1882 • Various

... have some intricate purpose? Well I have, for the Fourth-month showers have, and the mica on the ...
— Leaves of Grass • Walt Whitman

... fortress on the distant steep,— A lichen clinging to the rock: There sails a fleet upon the deep,— A wandering flock Of snow-winged gulls: and yonder, in the plain, A marble palace shines,—a grain Of mica glittering in the rain. Beneath thy feet the clouds are rolled By voiceless winds: and far between The rolling clouds new shores and peaks are seen, In shimmering robes of green and gold, And faint aerial ...
— Music and Other Poems • Henry van Dyke

... gneiss were dark bands of schist which tracked about in an irregular manner. Sporadic quartz veins here and there showed a light tint. They were specially interesting, for they carried some less common minerals such as beryl, tourmaline, garnet, coarse mica and ores of iron, copper and molybdenum. The ores were present in small quantities, but gave promise of larger bodies in the vicinity and indicated the probability of mineral ...
— The Home of the Blizzard • Douglas Mawson

... translucency, semiopacity; opalescence, milkiness, pearliness^; gauze, muslin; film; mica, mother-of-pearl, nacre; mist &c (cloud) 353. [opalescent jewel] opal. turbidity &c 426.1. Adj. semitransparent, translucent, semipellucid^, semidiaphanous^, semiopacous^, semiopaque; opalescent, opaline^; pearly, milky; frosted, nacreous. ...
— Roget's Thesaurus of English Words and Phrases: Body • Roget

... daytime the ice was often inch-deep in water, and the runners were imbedded in the soft and yielding snow. The coast from here on to Bering Straits is said to be rich in minerals; but although coal was frequently seen cropping out from the cliffs and mica is plentiful, we saw no gold, and only heard on one occasion of the precious metal. This was at Inchaun, about a day's journey from East Cape, where one Jim, an English-speaking Tchuktchi informed me that he knew of "a mountain of gold" about ten miles away. The lad offered ...
— From Paris to New York by Land • Harry de Windt

... AVANTURINE, a variety of quartz containing spangles of mica or scales of iron-oxide, which confer brilliancy on the stone. It is found chiefly in the Ural Mountains, and is cut for ornamental purposes at Ekaterinburg. Some of the Siberian aventurine, like that of the vase given by Nicholas ...
— Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 - "Austria, Lower" to "Bacon" • Various

... Fr. Edible.—The glistening coprinus received its name because of the very delicate scales which often cover the surface of the cap, and glisten in the light like particles of mica. This plant is very common during the spring and early summer, though it does appear during the autumn. It occurs about the bases of stumps or trees or in grassy or denuded places, from dead roots, etc., buried ...
— Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. • George Francis Atkinson

... undulating bank of thin blue cloud; with the island of Rachrin—famous for the asylum it had afforded the Bruce when there was no home for him in Scotland,—presenting in front its mass of darker azure. On and away! We swept past Islay, with its low fertile hills of mica-schist and slate; and Jura, with its flat dreary moors, and its far-seen gigantic paps, on one of which, in the last age, Professor Walker, of Edinburgh, set water a-boil with six degrees of heat less than he found necessary for the purpose ...
— The Cruise of the Betsey • Hugh Miller

... The mica was handled, and George said to her compassionately, "You see, my poor girl, the first thing you should do is to heft it in your hand. Now see, your lump is not ...
— It Is Never Too Late to Mend • Charles Reade

... the Doctor watched the transplanted child of the slums grow into a sturdy manhood in his new environment. He snapped at every suggestion his friend gave and with quick wit improved on it. He not only discovered and developed a mica mine on his mother's farm, he invented new machinery for its working that doubled the market output. Within six weeks from the time he began his shipments the mine was paying a steady profit of more than five hundred dollars a month. He had made just one trip ...
— The Foolish Virgin • Thomas Dixon

... when its moisture freezes is dead until it thaws out again. No extremity of cold will stop a candle from burning, and if it be properly sheltered by the tin can it will stand a great deal of wind. The "folding pocket lantern," which is nothing but a convenient tin can with mica sides, is the best equipment for travel, but an empty butter can or lard can is sometimes ...
— Ten Thousand Miles with a Dog Sled - A Narrative of Winter Travel in Interior Alaska • Hudson Stuck

... had shown themselves so simply wise as to reject a jewel which would have dimmed all earthly things, its splendor waned. When other pilgrims reached the cliff, they found only an opaque stone, with particles of mica glittering on its surface. There is also a tradition that, as the youthful pair departed, the gem was loosened from the forehead of the cliff, and fell into the enchanted lake, and that, at noontide, the Seeker's form may still be seen to bend over ...
— The Great Stone Face - And Other Tales Of The White Mountains • Nathaniel Hawthorne

... with the staff of command. Power! It too was potter's trash, which a stone might shatter, a flower in full bloom, whose leaves drop apart if touched by the finger! It was no noble metal, only yellow mica! ...
— Uarda • Georg Ebers

... the dining-room of the villa. Exclusive of the kitchen range, it boasted the only stove in the house, a queerly shaped "Salamandre," a kind of Franklin stove with mica doors. The walls were papered an ugly chocolate brown with a good deal of red in it, and the borders, doors, and fireplace frame were stained a color trembling between mission green and oak brown. The room was rectangular and too ...
— A Volunteer Poilu • Henry Sheahan

... bank shaded by large trees, we crossed the bed of the Manick Ganga ('Jewel River'). The sand was composed of a mixture of mica, quartz, sapphire, ruby, and jacinth, but the large proportion of ruby sand was so extraordinary that it seemed to rival Sindbad the Sailor's vale of gems. The whole of this was valueless, but the appearance of the sand was very inviting, ...
— The Rifle and The Hound in Ceylon • Samuel White Baker

... been redeemed from mud according to the plans of M'Adam; but the exposure of the situation, and the nature of the material employed, rendered the improvement rather questionable: every breeze that now blew filled the atmosphere with thick clouds of dust charged with particles of mica, which really made it a hazardous matter to venture forth on a gusty day, unless in a closed carriage, when tired of sitting at home, suffocated with heat, or smothered with dust by the wind, which ought to have borne health and comfort on ...
— Impressions of America - During the years 1833, 1834 and 1835. In Two Volumes, Volume I. • Tyrone Power



Words linked to "Mica" :   paragonite, biotite, micaceous, isinglass, lepidolite, muscovite, zinnwaldite, transparent substance



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