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Manganese   /mˈæŋgənˌiz/   Listen
Manganese

noun
1.
A hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals.  Synonyms: atomic number 25, Mn.



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"Manganese" Quotes from Famous Books



... rail itself is of special soft steel, to secure high conductivity. Its composition, as shown by tests, is as follows: Carbon, .08 to .15; silicon, .05; phosphorus, .10; manganese, .50 to .70; and sulphur, .05. Its resistance is not more than eight times the resistance of pure copper of equal cross-section. The section chosen weighs 75 pounds per yard. The length used in general is 60 feet, but in ...
— The New York Subway - Its Construction and Equipment • Anonymous

... articulate, and which would be most trying to a poet's measures. I don't wish to say a word against so respectable a science, far be that from me. True, in the august presence of rhombohedral crystals, retinasphaltic resins, gehlenites, Fassaites, molybdenites, tungstates of manganese, and titanite of zirconium, why, the most facile of tongues may make ...
— A Journey to the Interior of the Earth • Jules Verne

... the sky, and others veiled in trailing storms, and still others white with snow. That night in the dingy little store I heard prospectors talk about float, which meant gold on the surface, and about high grade ores, zinc, copper, silver, lead, manganese, and about how borax was mined thirty years ago, and hauled out of Death Valley by teams of twenty mules. Next morning, while Nielsen packed the outfit, I visited the borax mill. It was the property of an English firm, and the work of hauling, ...
— Tales of lonely trails • Zane Grey

... exhausted. The mineral products of the Tavistock district are various, and besides tin and copper, ores of zinc and iron are largely distributed. Great quantities of refined arsenic have been produced at the Devon Great Consols mine, by elimination from the iron pyrites contained in the various lodes. Manganese occurs in the neighbourhood of Exeter, in the valley of the Teign and in N. Devon; but the most profitable mines, which are shallow, are, like those of tin and ...
— Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 - "Destructors" to "Diameter" • Various

... abundant, and Iron occurs in the form of magnetic iron ore, titanite, chromate, yellow hydrated, per-oxide and iron pyrites. In most of these, however, the metal is scanty, and the ores of little comparative value, except for the extraction of manganese and chrome. "But there is another description of iron ore," says Dr. Gygax, in his official report to the Ceylon Government, "which is found in vast abundance, brown and compact, generally in the state of carbonate, though still blended ...
— Ceylon; an Account of the Island Physical, Historical, and • James Emerson Tennent

... iron ore, lead, zinc, manganese, bauxite, vehicle assembly, textiles, tobacco products, wooden furniture, tank and aircraft assembly, domestic ...
— The 2002 CIA World Factbook • US Government

... Club, where things are going on reasonably well. I hope we may get out some good historical documents in the course of the winter. Dined at the Royal Society Club. At the society had some essays upon the specific weight of the ore of manganese, which was caviare to the President, and I think most of the members. But it seemed extremely accurate, and I have little doubt was intelligible to those who had the requisite key. We supped at Mr. Russell's, where the conversation was as gay as usual. Lieut-Col. Ferguson was my guest ...
— The Journal of Sir Walter Scott - From the Original Manuscript at Abbotsford • Walter Scott

... schist and schorl; about gypsum and trap; about talc and calc; about blende and horn-blende; about mica-slate and pudding-stone; about cyanite and lepidolite; about hematite and tremolite; about antimony and calcedony; about manganese and ...
— The Works of Edgar Allan Poe - Volume 4 (of 5) of the Raven Edition • Edgar Allan Poe

... quantity of manganese in Brazil sold it to a Philadelphia firm for delivery to the United States Steel Company. The German Government in some way learned of this and the Dane was arrested and put in jail. His Minister had great difficulty ...
— My Four Years in Germany • James W. Gerard

... to cooler stars certain substances disappear and certain other substances take their places. It may be supposed, as a suggestive hypothesis, that the lowering of stellar temperature is accompanied by the formation, from simpler forms of matter, of such elements as iron, calcium, manganese, and other metals. ...
— The Story of Alchemy and the Beginnings of Chemistry • M. M. Pattison Muir

... The acid constantly neutralised by the ammonia of the crude gas is as constantly replaced by fresh acid formed by the oxidation of the sulphuretted hydrogen; and this free acid, acting upon the permanganate, liberates manganese peroxide, which is claimed to destroy the phosphorus and sulphur compounds present in the ...
— Acetylene, The Principles Of Its Generation And Use • F. H. Leeds and W. J. Atkinson Butterfield

... poisonous. Arsenious acid, quick inflection: poisonous. Iron chloride, slow inflection: probably poisonous. : Manganese chloride. Chromic acid, quick inflection: highly poisonous. Copper chloride, rather slow in flection: poisonous. : Cobalt chloride. Nickel chloride, rapid inflection: probably poisonous. Platinum chloride, ...
— Insectivorous Plants • Charles Darwin

... growing less and less, it is not beyond the range of possibility that some day Britain may import some of this unrivalled stone for special uses. There are also quicksilver mines, and lead, tin, and manganese ...
— Round the World • Andrew Carnegie

... single layer. Blueish-grey and pale yellow marbles are found near Corte and Bastia. But of metalliferous rocks and deposits the island cannot boast; a few iron mines, that of Olmeta in particular, one of copper, another of antimony, and one of manganese, form the scanty catalogue. It is to the island of Elba that we must ...
— Rambles in the Islands of Corsica and Sardinia - with Notices of their History, Antiquities, and Present Condition. • Thomas Forester

... necessary for the postulation of wildly variant life forms. Earth itself was prolific in its variations; Earthlike planets were equally inventive. Carbon, hydrogen, and oxygen, plus varying proportions of phosphorus, potassium, iodine, nitrogen, sulfur, calcium, iron, magnesium, manganese, and strontium, plus a smattering of trace elements, seem to be able to cook up all kinds of life under the strangest ...
— Cum Grano Salis • Gordon Randall Garrett

... the experiment. He takes a sort of large, long glass bulb, bent abruptly in the region of the neck. This, he informs us, is a retort. He pours into it, from a screw of paper, some black stuff that looks like powdered charcoal. This is manganese dioxide, the master tells us. It contains in abundance, in a condensed state and retained by combination with the metal, the gas which we propose to obtain. An oily looking liquid, sulfuric acid, an excessively powerful agent, will set it at liberty. Thus filled, the retort is ...
— The Life of the Fly - With Which are Interspersed Some Chapters of Autobiography • J. Henri Fabre

... safe to state at the present time that fertile soils should contain at least the following twenty elements: Nitrogen, phosphorus, potassium, calcium, magnesium, sulphur, hydrogen, carbon, oxygen, iron, sodium, chlorine, aluminum, silicon, manganese, copper, zinc, boron, iodine, ...
— Northern Nut Growers Association Report of the Proceedings at the Thirty-Seventh Annual Report • Various

... the carbon content has been eliminated the appropriate percentage of carbon has to be put back. This latter operation is carried out by adding a precise quantity of manganiferous pig-iron (spiegeleisen) or ferromanganese, the manganese serving to remove the oxygen, which has combined with ...
— The Beginnings of Cheap Steel • Philip W. Bishop

... a jar about 4 in. in diameter and 8 in. high and place in the bottom of this jar the lower half of a tin baking powder can, to which a wire has been soldered for connections. Place in the can a mixture of 2 oz. black oxide of copper, 1 oz. black oxide of manganese and some ...
— The Boy Mechanic: Volume 1 - 700 Things For Boys To Do • Popular Mechanics

... to his ingenious invention, the lightning, which had struck the aircraft, had been diffused through the safety "cage" and safely convoyed to the earth by the ground chain made of light manganese bronze, which had been ...
— The Boy Inventors' Radio Telephone • Richard Bonner

... Climate: mostly temperate; arid in southeast; subantarctic in southwest Terrain: rich plains of the Pampas in northern half, flat to rolling plateau of Patagonia in south, rugged Andes along western border Natural resources: fertile plains of the pampas, lead, zinc, tin, copper, iron ore, manganese, crude oil, uranium Land use: arable land 9%; permanent crops 4%; meadows and pastures 52%; forest and woodland 22%; other 13%; includes irrigated 1% Environment: Tucuman and Mendoza areas in Andes subject to earthquakes; ...
— The 1992 CIA World Factbook • United States. Central Intelligence Agency.

... application of the metal cyanic, mellonic or other toning baths. Alkalies and alkaline carbonates may also be used to remove the chromic acid, and leave a subsalt, or the very stable oxide or carbonate of manganese, which may be peroxidized by the use of chloride of lime, peroxide of ...
— Photographic Reproduction Processes • P.C. Duchochois

... 380 feet, while the "low cape" is only 250 feet, and near it on the west is an elevation of 400 feet. It would be properly represented as "rather a low cape" in contradistinction to the neighboring coast. Iron and manganese are found here, and the latter has been mined to some extent, but is now discontinued, as the expense is too ...
— Voyages of Samuel de Champlain, Vol. 2 • Samuel de Champlain

... antimony, coal, iron ore, manganese, nickel, phosphates, tin, uranium, gem diamonds, platinum, copper, vanadium, ...
— The 2008 CIA World Factbook • United States. Central Intelligence Agency.

... observation. The agreement was verified by Angstrom; two further coincidences were established; and in 1866 a fourth hydrogen line in the extreme violet (named h) was detected in the solar spectrum. With Thalen, he besides added manganese, titanium, and cobalt to the constituents of the sun enumerated by Kirchhoff, and raised the number of identical rays in the solar and terrestrial spectra of iron ...
— A Popular History of Astronomy During the Nineteenth Century - Fourth Edition • Agnes M. (Agnes Mary) Clerke

... manganese, which forms the base of an excellent battery for giving a small rendering, possesses at first better conductivity than oxide of copper, but this property is lost by reduction and transformation into lower oxides. It follows that the copper battery will give a very large quantity ...
— Scientific American Supplement, No. 421, January 26, 1884 • Various

... it receives from metals are sufficient to produce these varieties. Thus, amethyst, or purple quartz, is tinged with a little iron and manganese. Rose quartz, or false ruby, derives its colour from manganese. Avanturine is a beautiful variety of quartz, of a rich brown colour, which, from a peculiarity of texture, appears filled with bright spangles. Small crystals ...
— The Mirror of Literature, Amusement, and Instruction, Vol. 20, - Issue 560, August 4, 1832 • Various

... life on the part of the Negro in the American navy was made when the U.S.S. war vessel Cyclops so mysteriously disappeared. Loaded with a cargo of manganese, with fifty-seven passengers, twenty officers, and a crew of two hundred and thirteen enlisted men (twenty-three of whom were Negroes). The vessel was due in port March 13, 1918. On March 4, the Cyclops reported at Barbadoes, British West Indies, where she put in for bunker coal. ...
— Kelly Miller's History of the World War for Human Rights • Kelly Miller

... Cove, where they plan to embark. In the baggage car are the "pontoons," which in reality are two cylinders of aluminum, about twenty feet in length by three in diameter and capable of sustaining a weight of almost a ton. To the bottom of each, Frank had riveted a thin "keel" of manganese bronze with a heavy fin of lead affixed to it. This was to give stability in the rough waters they ran a chance of encountering on the outskirts of ...
— The Boy Aviators' Treasure Quest • Captain Wilbur Lawton

... steel production, mining (coal, iron ore, lead, zinc, manganese, and bauxite), manufacturing (vehicle assembly, textiles, tobacco products, wooden furniture, 40% of former Yugoslavia's armaments including tank and aircraft assembly, domestic ...
— The 1995 CIA World Factbook • United States Central Intelligence Agency

... is a very soft metal, with so strong an affinity for oxygen that it burns in water. Manganese, which belongs to the 'iron group,' is hard enough to scratch glass; and, like iron, is decidedly ...
— A Trip to Venus • John Munro

... a treatise on manganese, which is to be found in the Transactions of the Royal Swedish Academy of Sciences for the year 1774, that this mineral is not soluble in any acid unless an inflammable substance be added, which communicates the phlogiston to the manganese, and ...
— Discovery of Oxygen, Part 2 • Carl Wilhelm Scheele

... syenitic rocks are coated by a black substance, appearing as if they had been polished with plumbago. The layer is of extreme thinness; and on analysis by Berzelius it was found to consist of the oxides of manganese and iron. In the Orinoco it occurs on the rocks periodically washed by the floods, and in those parts alone where the stream is rapid; or, as the Indians say, "the rocks are black where the waters are white." Here the coating is of a rich brown instead of a black colour, and seems to be composed ...
— A Naturalist's Voyage Round the World - The Voyage Of The Beagle • Charles Darwin

... most commonly stained of the same ochreous colour as the flints of the gravel in which they are imbedded. Occasionally their antiquity is indicated not only by their colour but by superficial incrustations of carbonate of lime, or by dendrites formed of oxide of iron and manganese. The edges also of most of them are worn, sometimes by having been used as tools, or sometimes by having been rolled in the old river's bed. They are met with not only in the lower-level gravels, as in No. 3, Figure 87, but also in No. 4, or the higher gravels, as at St. Acheul, ...
— The Student's Elements of Geology • Sir Charles Lyell

... few localities is iron ore found in a metallic or "native" form. Many meteorites consist of metallic iron mixed with nickel and manganese, and in Greenland a volcanic dyke or ledge of metallic iron is known to exist. The iron of commerce is derived from "ores," or chemical compounds of iron and oxygen, or iron and carbon. The cheapness of the product depends upon the ease with which the ore may be quarried, ...
— Commercial Geography - A Book for High Schools, Commercial Courses, and Business Colleges • Jacques W. Redway

... were obtained, commonly, at any rate, from metallic oxides. The ordinary blue employed is cobalt, though it is suspected that there was an occasional use of copper. Copper certainly furnished the greens, while manganese gave the brown, which shades off into purple and into black. The beautiful milky white which forms the ground tint of some vases is believed to have been derived from the oxide of tin, or else from phosphate of chalk. It is said that ...
— History of Phoenicia • George Rawlinson

... life. In the composition of vital tissues we constantly find these basal elements: Carbon, oxygen, hydrogen, nitrogen, sulphur, phosphorus, chlorine, potassium, sodium, magnesium, calcium, iron, manganese, fluorine, silicon, and iodine. The function of these elements will ...
— Valere Aude - Dare to Be Healthy, Or, The Light of Physical Regeneration • Louis Dechmann

... the form of nonmagnetic compounds. They averaged eighteen per cent silicon, fourteen per cent magnesium, between one and one point five per cent each of aluminum, nickel, and calcium, and good-sized dollops of sodium, chromium, phosphorous, manganese, ...
— Anchorite • Randall Garrett

... manufacture of the Copal varnishes: first of all, a high grade oil is boiled at a high temperature, with different materials to oxidize it; for instance, red lead or oxide of manganese. The heat throws off the oxygen from the red lead or manganese. The oxygen is absorbed by the linseed oil, which is then put away to settle and age. When a batch of varnish is made, the gums are melted in a large kettle and ...
— Handwork in Wood • William Noyes

... with ashes. In its strictly chemical sense it refers to combinations of fatty acids with metallic bases, a definition which includes not only sodium stearate, oleate and palmitate, which form the bulk of the soaps of commerce, but also the linoleates of lead, manganese, etc., used as driers, and various pharmaceutical preparations, e.g., mercury oleate (Hydrargyri oleatum), zinc oleate and lead plaster, together with a number of other metallic salts of fatty acids. Technically speaking, however, the meaning of the term soap is considerably ...
— The Handbook of Soap Manufacture • W. H. Simmons

... of Parliament. The Manufactures are large and comprehensive, and include the most famous distilleries in the world. The Minerals are most abundant, and amongst these may be reckoned quartz, porphyry, felspar, malachite, manganese, ...
— Blackwood's Edinburgh Magazine, Volume 58, Number 360, October 1845 • Various

... count for much," he answered, blowing at his tea to cool it. "It's not like coal or manganese. Gold is where you find it. There are ...
— Guns of the Gods • Talbot Mundy

... frequently in the middle of the 19th century. Mineral colours, with very few exceptions, are no longer used in food. Oxide of iron or ochre is still very often found in potted meats, fish sauces and chocolates; dioxide of manganese is admixed with cheap chocolates. All lump sugar of commerce is dyed. Naturally it has a yellow tint. Ultramarine is added to it and counteracts the yellowness. In the same way our linen is naturally yellow and only made to look white by the use of the blue-bag. The same idea underlies both ...
— Project Gutenberg Encyclopedia

... water spring called the "Source de Jonas," containing bicarbonates of lime and magnesia, chlorides of soda and magnesia, silicates of lime, alumina, and soda, the carbonate of iron and the oxide of manganese. The water is tonic and slightly laxative. 9m. S. from Bourbon is St. Pardoux, in a wooded and hilly country, forming one of the best drives from Bourbon. There is here a spring of remarkably sparkling ...
— The South of France—East Half • Charles Bertram Black

... in prospecting for ore and extracting and milling it to the best advantage. "When our mining experts discover a mineral belt containing precious metals or copper, iron, lead, nickel, platinum, cobalt, quicksilver, manganese or any other ore used in manufactures and the arts, the first thing we do is to sink a shaft on the most likely ore chimney and at every one hundred feet in depth we run levels to develop it and if we continue ...
— Eurasia • Christopher Evans

... siliceo-calcareous cement, containing usually an admixture of a hornblendic substance, and which is due to a particular action of adjacent masses or veins of iron ore. The hornblendic cement, with its iron or manganese base, produces the variegated appearance which may be seen in specimens from different localities. As may be imagined from their composition, these rocks are as a rule extremely unalterable by ordinary atmospheric ...
— Roman Mosaics - Or, Studies in Rome and Its Neighbourhood • Hugh Macmillan

... differ materially from horn in its chemical composition. According to Vauquelin, its constituents are animal matter, a greenish-black oil, a white, concrete oil, phosphate of lime, a trace of carbonate of lime, oxide of manganese, iron, sulphur, and silex. Red hair contains a reddish oil, a large proportion of sulphur, and a small quantity of iron. White hair contains a white oil, and phosphate of magnesia. It has been supposed that hair grows after death, ...
— The People's Common Sense Medical Adviser in Plain English • R. V. Pierce

... hundred slaves, and owned by an English company who made an enormous profit out of it. I went down it, and, under the guidance of some Cornish miners, I had a try with a pick and succeeded in getting out several nuggets as thick as my little finger. As the vein was principally manganese, we were black all over when we came out of the mine, but a body of negresses came at once to wash us. Another expedition I made into the "camp" initiated me into a sort of sport which was new to me—hunting wild horses with a lasso. After having ...
— Memoirs • Prince De Joinville

... sick rooms from noxious vapours, exhalations, and all kinds of infected air, put half an ounce of finely pulverized black oxide of manganese into a saucer, and pour upon it nearly an ounce of muriatic acid. Place the saucer on the floor of the infected apartment, leave it and shut the door, and the contagion will be completely destroyed. Muriatic acid with red oxide of lead will have a similar effect. Sulphur burnt ...
— The Cook and Housekeeper's Complete and Universal Dictionary; Including a System of Modern Cookery, in all Its Various Branches, • Mary Eaton

... smelting iron and other metals except that aluminum is used instead of carbon to take the oxygen away from the metal in the ore. This has an advantage in case carbon-free metals are desired and the process is used for producing manganese, tungsten, titanium, molybdenum, vanadium and their ...
— Creative Chemistry - Descriptive of Recent Achievements in the Chemical Industries • Edwin E. Slosson

... salt, three ounces; black manganese, oil of vitriol, of each one ounce; water two ounces; carried in a cup through the apartments of the sick; or the apartments intended to be fumigated, where sickness has been, may be shut up for an hour ...
— Enquire Within Upon Everything - The Great Victorian Domestic Standby • Anonymous

... physical experiment is constantly being performed for us in the sun. Every large sunspot contains a magnetic field covering many thousands of square miles, within which the spectrum lines of iron, manganese, chromium, titanium, vanadium, calcium, and other metallic vapors are so powerfully affected that their widening and splitting can be seen with telescopes and ...
— The New Heavens • George Ellery Hale

... of the most complex alloys known. A representative steel contains approximately 24 per cent of alloying metals, namely, tungsten, chromium, vanadium, silicon, manganese, and in addition there is often found cobalt, molybdenum, uranium, nickel, tin, ...
— The Working of Steel - Annealing, Heat Treating and Hardening of Carbon and Alloy Steel • Fred H. Colvin

... are the Chapelle de St. Exupere, with a good view from the belfry; the Church of Notre Dame; and the ancient market-place. There are manganese ...
— Twixt France and Spain • E. Ernest Bilbrough

... his "Papers on Iron and Steel." Nevertheless, Mr. Bessemer is entitled to the merit of working out the idea, and bringing the process to perfection, by his great skill and indomitable perseverance. In the Heath process, carburet of manganese is employed to aid the conversion of iron into steel, while it also confers on the metal the property of welding and working more soundly under the hammer—a fact discovered by Mr. Heath while residing in India. Mr. ...
— Industrial Biography - Iron Workers and Tool Makers • Samuel Smiles

... decomposition, a series of most remarkable products, which have much analogy with those derived from uric acid in similar circumstances. The infusion of tea differs from that of coffee, by containing iron and manganese. We have in tea, of many kinds, a beverage which contains the active constituents of the most powerful mineral springs, and, however small the amount of iron may be which we daily take in this form, it cannot be destitute of influence ...
— The Book of Household Management • Mrs. Isabella Beeton

... usually attributed to the presence of manganese, but as it is capable of being much altered and even discharged by heat it has been referred by some authorities to an organic source. Ferric thiocyanate has been suggested, and sulphur is said to have been ...
— Project Gutenberg Encyclopedia

... glass to have been nearly identical with our own; but it contains, besides silex, lime, alumina, and soda, a relatively large proportion of extraneous substances, as copper, oxide of iron, and oxide of manganese, which they apparently knew not how to eliminate. Hence Egyptian glass is scarcely ever colourless, but inclines to an uncertain shade of yellow or green. Some ill-made pieces are so utterly decomposed that they flake away, or fall to iridescent dust, at the ...
— Manual Of Egyptian Archaeology And Guide To The Study Of Antiquities In Egypt • Gaston Camille Charles Maspero

... perrfect certainty. The Lang Men o' Larut were just a certainty. I have had talk wi' them. Now Larut, you will understand, is a dependency, or it may be an outlying possession, o' the island o' Penang, and there they will get you tin and manganese, an' it mayhap mica, and all manner o' meenerals. Larut is ...
— Life's Handicap • Rudyard Kipling

... contains carbonate of lime, carbonate of magnesia, oxide of iron, manganese, and silica, all suitable for application to the teeth. Therefore, a fine tooth powder is made by burning rye, or rye bread, to ashes, and grinding it to powder by passing the rolling-pin over it. Pass the powder through a ...
— The Ladies Book of Useful Information - Compiled from many sources • Anonymous

... burnt ochre.—The browns were ochres calcined, oxides of iron and manganese, and compounds of ochres ...
— Museum of Antiquity - A Description of Ancient Life • L. W. Yaggy

... he had been making some experiments with peroxide of manganese, a solution of which stood in a bottle on the table. A ray of brilliant sunlight was upon it, casting its shadow on a piece of white paper, a glorious red. It caught his eyes. He could never tell what it had to do with the current of his thoughts, but neither could he afterward get rid ...
— Paul Faber, Surgeon • George MacDonald

... Kheops of the Greeks, was probably son of Snofrui. He reigned twenty-three years, successfully defended the valuable mines of copper, manganese and turquoise of the Sinaitic peninsula against the Bedouin; restored the temple of Hathor at Dendera; embellished that of Babastis; built a sanctuary to the Isis of the Sphinx; and consecrated there gold, silver and bronze statues of Horus and many other gods. Other ...
— The World's Greatest Books, Vol XI. • Edited by Arthur Mee and J.A. Hammerton

... of St. James of Manganese! The richest of the monasteries of Constantinople, and the most powerful. It furnishes Sancta Sophia with renowned preachers. Its brethren cultivate learning. Their library is unexcelled, and they boast that in the hundreds of years of their society life, they had never an heretic. Before ...
— The Prince of India - Or - Why Constantinople Fell - Volume 1 • Lew. Wallace

... heated to a temperature of about 500 degrees, being stirred continually. This process, when large kettles are used, requires nearly the entire day. While the boiling process is going on, oxide of manganese is added, which helps to give the boiled oil better drying properties. A considerable portion of the oil is bleached, for the use of manufacturers of ...
— French Polishing and Enamelling - A Practical Work of Instruction • Richard Bitmead

... matter, soluble in dilute hydrochloric acid, is (with the exception of the alumina it may contain) composed of fertilising material. The substances found in the soluble inorganic matter of soils are lime, magnesia, alumina, silica, phosphoric acid, oxide of iron, oxide of manganese, potash and soda. The insoluble mineral matter is nearly all silica. There is very little clayey matter in any of the soils—not more than about five per cent. All the soils are remarkably free from stones or pebbles, or ...
— A start in life • C. F. Dowsett



Words linked to "Manganese" :   hausmannite, metallic element, pyrolusite, psilomelane, metal, manganite, rhodochrosite



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