| 单词 | muscovite |
| 例句 | Bournonite; apatite on muscovite; natural zircon in a spray of colors; dozens more minerals he cannot name. All the Light We Cannot See 2014-05-06T00:00:00Z Why is biotite called a ferromagnesian mineral, while muscovite is not? Physical Geology 2015-01-01T00:00:00Z To give an example of how large these crystals can get, transparent cleavage sheets of pegmatitic muscovite mica were used as windows during the Middle Ages. An Introduction to Geology 2017-01-01T00:00:00Z The film tells the story of four young muscovites’ action packed battle against an eccentric but reckless businessmen who is called Sergey Polyansky. Russian Tycoon to Sue 20th Century Fox for $1bn 2015-03-27T04:00:00Z The aplites, pegmatites, graphic granites and muscovite granites are usually richest in silica, while with increase of biotite and hornblende, augite and enstatite the analyses show the presence of more magnesia, iron and lime. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z In volcanic rocks, and in nearly all other kinds of igneous rocks with the exception of granite, biotite occurs to the exclusion of the muscovite. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z In muscovite mica, the only cations present are aluminum and potassium; hence it is a non-ferromagnesian silicate mineral. Physical Geology 2015-01-01T00:00:00Z Two frequently found micas are dark-colored biotite, frequently found in granite, and light-colored muscovite, found in the metamorphic rock called schist. An Introduction to Geology 2017-01-01T00:00:00Z The accessory minerals of these rocks are principally oligoclase, muscovite, apatite and zircon. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Zircon, apatite and iron oxides are the first; their crystals are small, very perfect and nearly free from enclosures; they are followed by hornblende and biotite; if muscovite is present it succeeds the brown mica. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z 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" Commonly even very felsic rocks will not have biotite or muscovite because they may not have enough aluminum or enough hydrogen to make the OH complexes that are necessary for mica minerals. Physical Geology 2015-01-01T00:00:00Z Minerals near the bottom, such as quartz and muscovite, crystalize at lower temperatures. An Introduction to Geology 2017-01-01T00:00:00Z The mica of India and the United States is chiefly muscovite. The Economic Aspect of Geology 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 The principal substances of this description are kaolin, muscovite and chlorite. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" This was accompanied by a growth of muscovite and quartz in the unbroken feldspar. History and Comprehensive Description of Loudoun County, Virginia Muscovite schist contains a slightly higher grade muscovite, indicating a greater degree of metamorphism. An Introduction to Geology 2017-01-01T00:00:00Z Approximately three-fifths of this consumption is in the form of mica splittings, most of which are made from muscovite in India and part from amber mica in Canada. The Economic Aspect of Geology 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 It seems to be a true muscovite, and is seldom marred by magnetic markings or crystalline inclusions that would interfere with its industrial use. Scientific American Supplement No. 822, October 3, 1891 The first step in the change was the cracking of the quartz and feldspar crystals and development of muscovite and chlorite in the cracks. History and Comprehensive Description of Loudoun County, Virginia The “green” part of the name is derived from green minerals like chlorite, serpentine, and epidote, and the “schist” part is applied due to the presence of platy minerals such as muscovite. An Introduction to Geology 2017-01-01T00:00:00Z Other rock-forming minerals are the large family of micas, with names like muscovite and phlogopite. Let's Collect Rocks and Shells In rocks containing quartz, muscovite or lepidolite are most common. The Student's Elements of Geology |
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