| 单词 | kaolin |
| 例句 | The handmade porcelain is still a traditional fabrication, from the secret formula of kaolin and quartz to the casting, washing, baking, polishing, painting and gilding. Nymphenburg Porcelain Gets a Fresh New Look 2010-04-26T14:01:00Z When this recipe started to affect her asthma, she developed her own variation using white kaolin clay. In the Studio With an Artist Devoted to the Line 2018-04-18T04:00:00Z It is made from a mix of kaolin clay and rocky materials like feldspar, quartz or alabaster, and fired at high temperatures. Art Review: A Jewel Box for Translucent Treasures 2011-12-15T22:59:09Z Though its face was originally painted white with kaolin, enough color has worn away to leave it with the look of an actor sweating through her makeup — a perfect balance of delicacy and passion. Treasure Hunting at the Winter Show 2022-04-01T04:00:00Z Neither kaolin clay nor a mix of neem and karanja oil significantly reduced damage on young apple trees, researchers reported in the Journal of Entomological Science. The cicadas are coming. But gardeners need not panic. 2021-03-30T04:00:00Z The cloth and kaolin are distinctive of Maroon culture, while the marks evoke scarification. 3 Art Gallery Shows to See Right Now 2021-05-05T04:00:00Z Collins, over at Washington State University, has been experimenting with spraying fine-powdered kaolin or bentonite, which are clays, mixed with water onto wine grapes so it absorbs materials that are in smoke. Wildfires can make your red wine taste like an ashtray. These scientists want to stop that 2023-09-28T04:00:00Z Wilkinson, Zandberg and others are experimenting with coating compounds such as a clay named kaolin, which essentially coats grapes to help prevent smoke from penetrating the skin. Wildfire smoke ruins taste of some wines 2021-09-10T04:00:00Z The UpCircle Beauty Clarifying Face Mask combines olive powder derived from discarded olive pits, white kaolin clay, coconut powder and baobab oil to gently detoxify and rejuvenate skin. The six best masks for at-home facials during the coronavirus shutdown 2020-04-16T04:00:00Z Another plus was that South Carolina is replete with kaolin, a type of clay used in making fiberglass. Casualty of trade war: Chinese investments in U.S. grind to a halt, blocking new jobs 2019-07-01T04:00:00Z She also said TVA researched the use of North Carolina clay, called kaolin, for these projects. New Deal artifacts unveiled at TVA building 2019-06-16T04:00:00Z Tourniquets are now standard issue in the U.S. military, along with hemostatic dressings—sterile gauze infused with kaolin, a clay that promotes swift blood clotting. Turning Bystanders Into First Responders 2019-04-01T04:00:00Z Subsurface pressure and temperature effects cause changes in the composition and properties of rocks, and from these we reap flint, chert, loess, kaolin, granite and clay. Human evolution’s ties to tectonics 2019-01-22T05:00:00Z Spraying the barriers with a nontoxic crop protectant, available online under the trade name Surround and derived from kaolin clay, will prevent the caterpillars from entering the apples. Bag your apples to keep maggots and codling moths away 2017-05-24T04:00:00Z “If your pores are clogged, meaning you’re plagued by blackheads and breakouts, look for masks with kaolin or bentonite clays,” says Madison. 9 No-Frills Men's Masks For Every Skin Type 2014-10-16T04:00:00Z Eventually the synthetic chemical bismuth subsalicylate—also the key ingredient in Pepto-Bismol—replaced kaolin, but the clay is still used today in other ways. Would You Like a Side of Dirt with That? 2012-05-25T11:45:00.240Z Packing a wound added pressure that impeded blood flow, and the kaolin in the gauze encouraged clotting. Turning Bystanders Into First Responders 2019-04-01T04:00:00Z The Chinese and Japanese, with which may be assimilated the German and French, all of them made of kaolin and felspar, sometimes with an addition of quartz. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z But what about quarries from which are taken building stone, salt, kaolin or clay? The Business of Mining A brief non-technical exposition of the principles involved in the profitable operation of mines 2012-02-18T03:00:17.387Z His mask uses both kaolin and bentonite clays, which help purge impurities from the face. 9 No-Frills Men's Masks For Every Skin Type 2014-10-16T04:00:00Z How to Stipple a Window White or Yellow.—For white, mix a little dextrine and kaolin in water. The Evolution of Photography With a Chronological Record of Discoveries, Inventions, etc., Contributions to Photographic Literature, and Personal Reminescences Extending over Forty Years 2012-02-15T03:00:30.577Z Coal along Arkansas river; iron ores in Ozark Mountains; salt springs near Ouachita; oilstone near Hot Springs; kaolin in Pulaski county. Alden's Handy Atlas of the World 2012-01-02T03:00:16.440Z For earthenware or china, the English potters use only two sorts of clays: the ball clay, also called blue clay, and the kaolin. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z He journeyed to Cornwall, and was successful in getting kaolin for chinaware. The Romance of Industry and Invention 2011-12-19T03:00:43.870Z Silver and iron have been found in various districts; kaolin is extracted in the plains of Montsin�ry; and phosphates have been discovered at several places. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z The minerals include quartz and gold, silver and galenas, copper, coal and lignite, manganese, asbestos, graphite, kaolin, opals, slate, alum, marble, silver, mica, iron, sulphur, lead. Guatemala, the country of the future 2011-12-12T03:00:29.630Z Generally speaking, kaolin, China clay, ball clay, pipe clay, China stone, felspar, flint, quartz, sand, lime, chalk, and calcined bone are the ingredients of most modern pastes. Pottery, for Artists Craftsmen & Teachers 2011-12-10T03:00:15.097Z This is a kind of hard porcelain made from a mixture of kaolin and felspar, in which the degree of hardness or fusibility is regulated by the proportion of one material towards the other. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z This was the more remarkable because kaolin had not then been discovered in this country. The Romance of Industry and Invention 2011-12-19T03:00:43.870Z An apothecary named B�tcher noticed the increased weight of the wig, analysed the powder, and discovered that it was identical with Chinese kaolin. Cornwall 2011-12-05T03:00:38.530Z These minerals are often clouded by a deposit of fine mica and kaolin, due to weathering. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Again, ground pitchers, fine grog, kaolin, or calcined flint could be tried as stiffening agents. Pottery, for Artists Craftsmen & Teachers 2011-12-10T03:00:15.097Z The English porcelain, the body of which is made, like the hard, from kaolin and Cornish stone, but differing from it by the addition of a large proportion of calcined bones. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z Barbadoes is somewhat remarkable as producing a variety of minerals; among which are coal, manganese, iron, kaolin, and yellow ochre. Equatorial America Descriptive of a Visit to St. Thomas, Martinique, Barbadoes, and the Principal Capitals of South America 2011-08-05T02:00:46.387Z Porcelain, which is composed, in England, of sand, calcined bones, china-clay, and potash; and, at Dresden, of kaolin, felspar, and broken biscuit-porcelain; 2. Triumphs of Invention and Discovery in Art and Science 2011-07-19T02:00:21.280Z In this way the rotten granite or china stone, used in pottery, originates; and over considerable areas kaolin replaces the felspar and forms valuable sources of china clay. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Calcined kaolin 150 Flint 50 Felspar 50 Whiting 10 Zinc oxide 10 V Matt Lead carbonate 375 120. Pottery, for Artists Craftsmen & Teachers 2011-12-10T03:00:15.097Z Surfaces Treatment: Inner surfaces of plates and bowls and outer surfaces of jugs, cups, mugs, chamber pots, and other utensils viewed on the exteriors are coated with white kaolin slip. North Devon Pottery and Its Export to America in the 17th Century 2011-05-14T02:00:10.023Z The alkali species yield kaolin by alteration, and are thus the source of china-clay. The New Gresham Encyclopedia Volume 4, Part 3: Estremoz to Felspar 2011-04-14T02:00:59.373Z Later, Böttcher succeeded in discovering the mode of making true porcelain by the accidental detection of the kaolin necessary for the purpose. The Collector's Handbook to Keramics of the Renaissance and Modern Periods 2011-02-28T03:00:33.843Z Hydrofluoric and boric emanations exert a profound influence on granitic rocks; their felspar is resolved into aggregates of kaolin, muscovite and quartz; tourmaline appears, largely replacing the brown mica; topaz also is not uncommon. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z In France also early experiments led eventually to the fabrication of porcelain much on the lines of English porcelain, a frit being used instead of kaolin. Pottery, for Artists Craftsmen & Teachers 2011-12-10T03:00:15.097Z He had been appointed one of the Board of Superintendence in a kaolin company. Sentimental Education Vol 1 2011-01-04T03:01:07.467Z The minerals known to exist are—alum, antimony, arsenic, asbestos, boracide, chrome, coal, copper, emery, fuller’s earth, gold, iron, kaolin, lead, lignite, magnetic iron, manganese, meerschaum, mercury, nickel, rock-salt, silver, sulphur and zinc. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" The kaolin used in making porcelain is much softer than petuntse when dug out of the quarry, yet it is this which, by its mixture with the other, gives strength and firmness to the work. The Collector's Handbook to Keramics of the Renaissance and Modern Periods 2011-02-28T03:00:33.843Z In the weathering of granite the quartz suffers little change; the felspar passes into dull cloudy, soft aggregates of kaolin, muscovite and secondary quartz, while chlorite, quartz and calcite replace the biotite, hornblende and augite. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Porcelain glazes, though not differing so much in composition from the ordinary fine earthenware glazes, are extremely hard, being compounded of kaolin, felspar, and quartz, with possibly limestone and ground sherds. Pottery, for Artists Craftsmen & Teachers 2011-12-10T03:00:15.097Z He had even promised a fourth of his profits in the famous kaolin mines. Sentimental Education Vol 1 2011-01-04T03:01:07.467Z Extremely valuable and varied marls, kaolins and clays, fuller’s earth, asphaltum and mineral waters show special promise in the state’s industry. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" The porcelain clays and kaolins contain about half their weight of this earth, to which they owe their most valuable properties. The New Gresham Encyclopedia. Vol. 1 Part 1 A to Amide There are moreover many properties common to colloidal solutions and suspensions of fine powders, such as kaolin, mastic, charcoal, or Indian ink. The Mechanism of Life Combined with silica it is the chief constituent of kaolins and China clays. Pottery, for Artists Craftsmen & Teachers 2011-12-10T03:00:15.097Z The picture-dealer had just been engaged in a lawsuit with reference to his grounds at Belleville, and he was actually in a kaolin company in Lower Brittany with other rogues of the same sort. Sentimental Education Vol 1 2011-01-04T03:01:07.467Z Under the Ukrainian ethnographic territory lie mineral riches: coal, petroleum, iron, manganese, salt, phosphate, kaolin, graphite and many other substances of commercial value. Memorandum to the Government of the United States on the Recognition of the Ukrainian People's Republic The mineral products of Dr�me include lignite, blende, galena, calamine, freestone, lime, cement, potter’s clay and kaolin. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 7 "Drama" to "Dublin" Other minerals extracted include salt, kaolin, chalk, talc, asbestos, gypsum, mica, fluorite, quartzite, antimony, lime, sandstone, slate, and pyrites. Area Handbook for Bulgaria Well-developed crystals are found in the emery deposits of the Urals and at Chester, Massachusetts, and in kaolin at Schemnitz in Hungary. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" "He is now, I believe, a shareholder in a kaolin company in Brittany." Sentimental Education Vol 1 2011-01-04T03:01:07.467Z Her mother and the nearest clan kin paint themselves with kaolin and visit her grave, accompanied by certain of her tribal brothers. Oriental Women Before mixing with the kaolin, the paraffine must be heated to fusing point. Paper and Printing Recipes A Handy Volume of Practical Recipes, Concerning the Every-Day Business of Stationers, Printers, Binders, and the Kindred Trades Clay and kaolin suitable for pottery are also extracted. Area Handbook for Albania It is certain, however, that the finer-grained rocks are richest in alumina, and in combined water; hence the inference is clear that kaolin or some other hydrous aluminium silicate is the dominating constituent. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" On another occasion Regimbart spread over his desk papers relating to the kaolin mines in Brittany. Sentimental Education Vol 1 2011-01-04T03:01:07.467Z At the ceremony of trampling on the grave of the dead man, in which certain women take part, and especially the widow, who scrapes the kaolin from her body, showing that her mourning is ended. Oriental Women Feldspar, kaolin, and other minerals containing potash, are, in some localities, to be obtained in sufficient quantities to be used for manurial purposes. The Elements of Agriculture A Book for Young Farmers, with Questions Prepared for the Use of Schools For the final polishing, a little infusorial earth or even kaolin will do. Laboratory Manual of Glass-Blowing It is almost always more than would be the case if the rock consisted of kaolin mixed with muscovite. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" Its supplies of the following are inadequate: antimony, asbestos, kaolin, chromate, corundum, garnet, manganese, emery, nitrates, potash, pumice, tungsten, vanadium, zirconium. The Geneva Protocol Besides the coloring, a "filler" is usually added at this time, such as kaolin, the fine clay of which china is made. Makers of Many Things The breaking up of kaolin accompanied by the removal of silica is not characteristic of temperate climates, though many clays in these climates show some bauxite. The Economic Aspect of Geology About the middle of autumn she won her action with reference to the kaolin shares. Sentimental Education, Volume II The History of a Young Man There are, in fact, a few clays which contain about 45% of alumina, that is to say, more than in pure kaolin. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" This change may be illustrated by quoting the analysis of a kaolin clay formed by the disintegration of orthoclase felspar. Manures and the principles of manuring I wouldn’t have called it anything but dirt, but papa said it was kaolin, not exactly dirt, but clay. Illustrated Science for Boys and Girls In the weathering of rocks high in alumina, and low in iron minerals and quartz, deposits of residual clay or kaolin nearly free from iron oxide and quartz are formed. The Economic Aspect of Geology "That kaolin business of his was near turning out very badly, a thing you may not be aware of, and even his reputation——" A contraction of the brows made him pause. Sentimental Education, Volume II The History of a Young Man The felspar decomposes into kaolin and quartz; its alkalis are for the most part set free and removed in solution, but are partly retained in the white mica which is constantly found in crude china-clays. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" A mixture consisting of equal parts by weight of DDT and kaolin 41 was used in the strength of 2 pounds of DDT to 100 gallons of water. Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948 With this object, many rude arrowpoints, concretions of stone, and the kaolin disk mentioned above were also found. Archeological Expedition to Arizona in 1895 Seventeenth Annual Report of the Bureau of American Ethnology to the Secretary of the Smithsonian Institution, 1895-1896, Government Printing Office, Washington, 1898, pages 519-744 Impurities of the bauxite ores are the small quantities of iron and titanium present in the original rocks, together with the kaolin which has not been broken up. The Economic Aspect of Geology I saw how delighted he was when you won that action of yours about the kaolin shares. Sentimental Education, Volume II The History of a Young Man The kaolin may be washed away from its original site, and deposited in hollows or lakes to form beds of white clay, such as pipe-clay; in this case it is always more or less impure. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" Four pounds of the standard mixture of equal parts of DDT and kaolin were used to 100 gallons of water in all applications. Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948 Other forms of this worked kaolin are spherical, oblong, or lamellar, sometimes more or less decorated on the outer surface, as shown in plate clxxii, e. Archeological Expedition to Arizona in 1895 Seventeenth Annual Report of the Bureau of American Ethnology to the Secretary of the Smithsonian Institution, 1895-1896, Government Printing Office, Washington, 1898, pages 519-744 It is usually associated with kaolin and frequently with quartz, and is believed to have been formed by surface alterations. The Economic Aspect of Geology And what is this kaolin of which Will had discovered so grand a store? Menhardoc It consists of very fine scaly kaolin, larger, shining plates of white mica, grains of quartz and particles of semi-decomposed felspar, tourmaline, zircon and other minerals, which originally formed part of the granite. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" Many articles of greatest practical importance, ranging from the roughest brick and tile to the finest porcelain and chinaware, are made from some form of kaolin, or clay. An Elementary Study of Chemistry There were likewise fragments of green carbonate of copper and kaolin, a yellow ocher, and considerable vegetal matter mixed with the sand. Archeological Expedition to Arizona in 1895 Seventeenth Annual Report of the Bureau of American Ethnology to the Secretary of the Smithsonian Institution, 1895-1896, Government Printing Office, Washington, 1898, pages 519-744 But silver is mined abundantly, and also kaolin, or the raw material used in the manufacture of the beautiful porcelain of the country. Up To Date Business Home Study Circle Library Series (Volume II.) This fine white clay the Chinese call kaolin, and it is to the discovery of veins of the soft white plastic material in England that the wonderful strides in our china manufactures are due. Menhardoc The principal substances of this description are kaolin, muscovite and chlorite. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" Porcelain is made from the purest kaolin, to which must be added some less pure, plastic kaolin, since the pure substance is not sufficiently plastic. An Elementary Study of Chemistry After marking, all holes and parts which are to remain uncarburized are plugged or luted with a mixture of kaolin and Mellville gravel clay, and the gear is packed in the carburizing material. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel As you can well understand," began Mr. Croyden, "the discovery of kaolin set England as eagerly to experimenting at porcelain-making as it had the other nations. The Story of Porcelain The attendant on the east side of the rug having completed his twelve sticks, painted them white with kaolin finely ground and mixed with water. Ceremonial of Hasjelti Dailjis and Mythical Sand Painting of the Navajo Indians Are specimens of a whitish clay or kaolin, of which a solution is made and applied to the outer surfaces of earthenware. Illustrated Catalogue Of The Collections Obtained From The Indians Of New Mexico And Arizona In 1879 Second Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1880-81, Government Printing Office, Washington, 1883, pages 307-428 The hard black lava on the glass-like obsidian were changed to white kaolin as soft and powdery as chalk. A Book of Natural History Young Folks' Library Volume XIV. The alcohol is passed with steam through a vertical iron tube filled with kaolin and heated. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries "Different combinations of kaolin clays and phosphates; a ware which in the porcelain trade is known as bone china," replied Mr. Croyden. The Story of Porcelain His face and hands were covered with white kaolin. Ceremonial of Hasjelti Dailjis and Mythical Sand Painting of the Navajo Indians Subsequently the term applied by long custom to designate the material itself became corrupted into the word now familiar in all countries,—kaolin. Some Chinese Ghosts Their faces are painted black across the whole mid section and the chins are covered with white kaolin—a really startling effect. The Unwritten Literature of the Hopi There are also iron mines, and quarries of marble, granite, onyx, serpentine, limestone and sandstone—beds of fire clay, kaolin, fire and potter's clays, talc and asbestos and many prospects of petroleum. A Review of the Resources and Industries of the State of Washington, 1909 Well, as you can imagine, after kaolin was discovered the secret gradually leaked out, and everybody went to work at making china. The Story of Porcelain Thirdly, Cornwall, a county in which I have not been, but which is sufficiently known as possessing kaolin and granite. Theory of the Earth, Volume 2 (of 4) As the string, especially at corrobboree times, is covered with white kaolin or gypsum, it serves as a decoration rather than a covering. Studies in the Psychology of Sex, Volume 1 The Evolution of Modesty; The Phenomena of Sexual Periodicity; Auto-Erotism The natives assert that it devours the kaolin clay called by them kiri-mattie321 in a very peculiar way. Sketches of the Natural History of Ceylon The mineralogical section was not so extensive as that devoted to wood, but it showed magnificent specimens from the gold mines, also samples of silver, copper, lead, isinglass, coal, marble, kaolin, etc. Final Report of the Louisiana Purchase Exposition Commission The phosphate of lime that is mixed with the kaolin renders the body of the ware more porous and elastic. The Story of Porcelain The decomposition of feldspar has yielded a large part of the clay of the soil, also the mineral kaolin, an essential material in the making of fine pottery. The Gutenberg Webster's Unabridged Dictionary Section F, G and H Considerable quantities of aluminium are obtained from the kaolin deposits in the vicinity. The Project Gutenberg Encyclopedia Volume 1 of 28 Gypsum is found, especially in Azua province, and the presence of kaolin and feldspar in the province of Santo Domingo, south of the central range, offers a possibility of porcelain manufacture. Santo Domingo A Country with a Future Besides the gold, there were shown collections of polished pebble, copper ores, native silver, including cobalt and antimony ores, crystals, opals, marble, jasper, asbestos, limestone, kaolin, asphaltum, and tellurium ores. Final Report of the Louisiana Purchase Exposition Commission Now you can imagine with a background of such progress at china-making, what a furore and transformation followed when kaolin was discovered. The Story of Porcelain There are fine kaolin beds in Chester and Delaware counties in this State; there are clay beds in New Jersey, and the recent needs of Ohio potteries have uncovered fine clay in that State. Scientific American Supplement, No. 286, June 25, 1881 Such a substance does not deposit the black particles, even when filtered through kaolin, and hence convert pelt into leather possessing black colour on the surface. Synthetic Tannins There were also silver, copper, nickel, and a fine quality of kaolin or porcelain clay. A Woman's Life-Work — Labors and Experiences A very elaborate display of kaolin—plastic, vitrifying, and refractory clays—was made. Final Report of the Louisiana Purchase Exposition Commission However, even if he had heard the name it probably would have conveyed nothing to him, for no one in Europe had ever heard of kaolin. The Story of Porcelain Among these are gold, silver, copper, lead, iron, mica, corundum, graphite, manganese, kaolin, mill-stone grits, marble, barytes, oil shale, buhrstones, roofing slate, etc. School History of North Carolina : from 1584 to the present time One gramme of kaolin, freed from all soluble matter, may be added to the filtrate, or it may be used by mixing it with the hide powder in the shaking bottle. Synthetic Tannins He exhibited a specimen of each metal, and two bowls made of the native kaolin, a very fine material. A Woman's Life-Work — Labors and Experiences These were found by Delesse to be trap impregnated with the red oxide of iron, and in part reduced to kaolin. The Student's Elements of Geology "Already I have told you that the Chinese made beautiful porcelains from kaolin and petuntse, two clays which produced a hard, semi-transparent china," he began. The Story of Porcelain Porcelain and Pottery.—Genuine porcelain and china-ware are made of a fine clay, kaolin, which results from the disintegration of feldspathic rocks. An Introduction to Chemical Science When woven they are given a coating of wet kaolin, which adds to their whiteness. The Grand Canyon of Arizona; how to see it Only a hard paste, or kaolin ware, is acknowledged by experts to be genuine porcelain. The Story of Porcelain The purest clay found in nature is porcelain clay, or kaolin, which results from the decomposition of a rock composed of feldspar and quartz, and it is almost always mixed with quartz. The Student's Elements of Geology |
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