| 单词 | augite |
| 例句 | Pertaining to, or like, augite; containing augite as a principal constituent; as, augitic rocks. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z It is now applied to the dark-coloured aluminous members of the monoclinic amphiboles, occupying in this group the same position that augite occupies in the pyroxene group. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6 "Home, Daniel" to "Hortensius, Quintus" 2012-03-15T02:00:32.250Z The biotite is brown; the hornblende brown or greenish brown; the augite usually green. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z Many accessory minerals such as tourmaline and zircon have been identified also, while augite, hornblende and other volcanic minerals occur in varying proportion as in all the sediments of the open sea. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z Green augite and hypersthene form a considerable part of these rocks, they may contain also biotite, hornblende and quartz. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z The augite is usually brown, but greenish, violet and colourless varieties may occur. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z Diabase, originally an equivalent of diorite; then used for chloritic igneous rocks of the Intermediate series of various grain; and now usually for a type of dolerite in which the felspar is embedded in augite. The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde 2011-04-14T02:00:57.977Z Columns, pentagonal or heptagonal, crown the tops of hills, and seem rather a composition of hornblende than of augite and feldspar. The Highlands of Ethiopia 2011-02-25T03:01:07.193Z In what kinds of rock is augite found? Geology 2011-02-20T03:00:12.660Z 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 Hornblende when primary is often brown, and may surround augite or be perthitically intergrown with it; original green hornblende probably occurs also, though it is more frequently secondary. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z In the less complete stages of alteration, ophitic structure may persist, and the original augite of the rock may not have been entirely replaced by 689 hornblende. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" 2011-02-19T03:00:59.807Z They consist essentially of plagioclase felspar, with hornblende or augite, and may contain also biotite, quartz and a limited amount of orthoclase. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Basalt is a dark or almost black compact homogeneous rock, composed of felspar and augite with magnetic iron. Geology 2011-02-20T03:00:12.660Z The hornblende of granites is usually pale green in section, the augite and enstatite nearly colourless. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Sometimes the felspar is brownish-red, and the rock not unfrequently contains disseminated augite? Narrative of a Second Expedition to the Shores of the Polar Sea The cones themselves are composed largely of acid andesites, but many of the lavas are augite andesites and basalts. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 "Cat" to "Celt" One of the varieties of the Trap-rocks, composed of augite and felspar. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology Hornblende, like augite, also includes a great many minerals. Geology 2011-02-20T03:00:12.660Z 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 The porphyry has a compact basis, like hornstone, of a dull brown colour, which contains imbedded crystals of felspar and quartz, and occasionally of augite. Narrative of a Second Expedition to the Shores of the Polar Sea In Minahassa, at the northern extremity, there is a large area of tuffs and agglomerates consisting chiefly of augite andesite, and in this area there are many recent volcanic cones. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 "Cat" to "Celt" It is a dark green or black stone, composed of augite and felspar, very compact in texture, and of considerable hardness, often found in regular pillars of three or more sides called basaltic columns. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology When the crystals are small, it is often difficult to distinguish hornblende from augite. Geology 2011-02-20T03:00:12.660Z They may be ophitic, though often they are not, and they usually contain olivine, while their augite has distinctly purple shades, and a feeble dichroism. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 "Dodwell" to "Drama" It has, generally, a flesh-red colour, and contains some specks of augite, but little or no mica. Narrative of a Second Expedition to the Shores of the Polar Sea These are distinguished from augite by containing little or no aluminium. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" Volcanic rocks composed of felspar, augite, and hornblende. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology Sometimes hornblende, or augite, or mica is present. Geology 2011-02-20T03:00:12.660Z Their essential minerals are those of basalt, viz. olivine, augite and plagioclase felspar, while hornblende, ilmenite, apatite and biotite are their commonest accessory ingredients. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 "Dodwell" to "Drama" A small crystal of green augite is represented at the bottom of Fig. Etna A History of the Mountain and of its Eruptions Some contain biotite, others augite or hypersthene; many have a small amount of quartz. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" The lava contained augite; and the specific gravity was 2·07 and 2·70. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology In addition to the reddish or brownish argillaceous matrix it contains fresh or decomposed crystals of volcanic minerals, such as felspar, augite, hornblende, olivine and pumiceous or palagonitic rocks. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" The commonest type of structure in dolerite is the ophitic, which results from the felspar of the rock having crystallized before the augite; the latter mineral forms shapeless masses in which the idiomorphic felspars lie. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 "Dodwell" to "Drama" A crystal of augite is shown near the bottom of the drawing. Etna A History of the Mountain and of its Eruptions The augite is nearly always green but sometimes has a reddish tinge; bronzite and hypersthene have their usual green and brown shades. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" There is great similarity in the composition of the ancient and modern lavas of Etna, both consisting of felspar, augite, olivine, and titaniferous iron. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology Basalt is the most fusible of volcanic rocks, owing to the augite and magnetite it contains, so that it spreads out with a very slight slope when highly fused. Volcanoes: Past and Present Generally the paste consists of a matrix of fine clay tempered with finely pulverized sand, in which may be detected grains of quartz, feldspar, hornblende, augite, particles of iron oxide, &c. Ancient art of the province of Chiriqui, Colombia Sixth Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1884-1885, Government Printing Office, Washington, 1888, pages 3-188 The lava is in close contiguity to the clay deposits of a mud volcano, and when examined under the microscope is seen to consist mainly of augite, together with olivine and transparent crystals of labradorite. Etna A History of the Mountain and of its Eruptions It is also an essential constituent of some pyroxene-granites, diorites and a few other igneous rocks, but the characteristic pyroxene of this class of rocks is augite. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" Mica occurs plentifully in some recent trachytes, but is rarely present where augite is in excess. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology Beds of volcanic ash or breccia also frequently occur, and often contain augite crystals. Volcanoes: Past and Present But transition forms are very common, having more or less of the augite remaining, surrounded by newly formed hornblende which at first is rather fibrous and tends to spread outwards through the surrounding felspar. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" The vitreous matter which occurs in these lavas is principally present in the form of inclosures in the felspar, and, sometimes, the augite and olivine crystals previously described. Etna A History of the Mountain and of its Eruptions More rarely biotite and augite exhibit the same relations to the plagioclase. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" Black sparkling sand from the eruption of 1822, containing minute regularly formed crystals of augite and tourmaline 0 2½ 2. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology In the older rocks, basalt has often undergone decomposition into melaphyre; and amongst the metamorphic rocks it has been changed into diorite or hornblende rock; the augite having been converted into hornblende. Volcanoes: Past and Present These rocks consist of augite and plagioclase, with little or no olivine, on a brown, vitreous, interstitial matrix. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" The ground mass was found to consist of felspar microliths, and grains of olivine, augite, and magnetite, with some interstitial glass. Etna A History of the Mountain and of its Eruptions The augite is mostly brown, often with a purplish tinge, hardly at all dichroic, but frequently showing zonal or hour-glass structure, and various types of twinning. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon" Vesuvian minerals.—A great variety of minerals are found in the lavas of Vesuvius and Somma; augite, leucite, felspar, mica, olivine, and sulphur are most abundant. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology These extensive sheets of water are surrounded by banks of tuff and volcanic sand, in which fragments of augite, leucite, and crystals of titanite are distributed. Volcanoes: Past and Present The minerals of diabase are the same as those of dolerite, viz. olivine, augite, and plagioclase felspar, with subordinate quantities of hornblende, biotite, iron oxides and apatite. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" Basalt is an igneous rock composed largely of augite and felspar, which are silicate crystals of calcium, potassium, alumina, etc., of which the Moonstone is a variety. Second Sight A study of Natural and Induced Clairvoyance The augite is usually violet coloured, and shows zonal and hour-glass structures. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon" Their number is by no means large, and they all consist of mixtures in variable proportions of quartz, felspar, mica, hornblende, augite, and zeolites. Elements of Agricultural Chemistry Vesuvian lava, glass paste with numerous crystals of leucite; others of augite and nepheline porphyritically developed; also small grains of magnetite. Volcanoes: Past and Present The bones were dug up by Mr. Walter Mantell from a bed of marly sand, containing magnetic iron, crystals of hornblende and augite, and the detritus of augitic rocks and earthy volcanic tuff. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 Its form is conical, and the rock is composed of basalt feldspar with a small quantity of augite. The Story of the Philippines and Our New Possessions, Including the Ladrones, Hawaii, Cuba and Porto Rico The Eldorado of the Orient Their commonest minerals are olivine, anorthite, hornblende, augite, biotite and leucite. The Project Gutenberg Encyclopedia Volume 1 of 28 With the exception of quartz and augite, these names are, however, representatives of different classes of minerals. Elements of Agricultural Chemistry Section of augite crystal from the lava of 1794, with numerous gas cells and delicately banded walls. Volcanoes: Past and Present On the formation of jasper by the action of dioritic porphyry, augite, and by persthene rock, see Rose, bd. ii., s. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 Pyroxene, quartz and augite form the groundmass, as seen in section. The Long Labrador Trail Below this were strata of trachitic breccia and augite; the formation was then seamy to an unknown depth. Scientific American Supplement, No. 392, July 7, 1883 Hornblende and augite are two widely distributed minerals, which are so similar in composition and properties that they may be considered together. Elements of Agricultural Chemistry Gabbro, from Carlingford Hill, Ireland, consisting of anorthite, augite, a little olivine, and magnetite. Volcanoes: Past and Present Composite rocks are definite associations of certain crytonostic, simple minerals, as feldspar, mica, solid silex, augite, and nepheline. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 It troubled me little at that moment whether feldspar and augite were the two largest components, and I knew that Holman and the two girls were not interested. The White Waterfall Should we conclude from this position that they are of more recent formation than the lithoid basaltic lava, which contains olivine and augite? Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 Stones of a light coloured rock, with crystals of augite, pebbles of sandstone, of conglomerate, and of quartz, are scattered over the ground, or imbedded in the loamy beds of the water-courses. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 "So you don't know the difference between augite and hornblende?" he once enquired. South Wind In mineral composition they scarcely differ from the lavas of Somma, the rock consisting of a base of leucite and augite, through which large crystals of augite and some of leucite are scattered. The Student's Elements of Geology We knew that the place was ugly and sinister, but feldspar and augite didn't give it that look. The White Waterfall Eighthly: a bed, about fifty feet thick, of greenish-grey, compact, feldspathic lava, with numerous small crystals of opaque feldspar, black augite, and oxide of iron. Geological Observations on South America When a small fragment is heated in the blowpipe, the black specks are easily fused into black brilliant beads, which become magnetic,—characters that apply to no common mineral except hornblende or augite. Volcanic Islands Next to quartz, which is nearly pure silica or silicic acid, the most important are those silicates commonly classed under the several heads of feldspar, mica, hornblende or augite, and olivine. The Student's Elements of Geology By this process, fossil shells or corals may often lose their carbonic acid, and the residual lime may enter into the composition of augite, hornblende, garnet, and other hypogene minerals. The Student's Elements of Geology In addition to these characters, it was remarked as a geological fact, that augite and hornblende are very rarely associated together in the same rock. The Student's Elements of Geology This name has usually been extended to all granular mixtures, whether of hornblende and feldspar, or of augite and feldspar. The Student's Elements of Geology I did not observe in any specimen distinguishable crystals of hornblende or augite; I except the fused grains in the ejected fragments, and in the pinnacle of the little crater, above described. Volcanic Islands It was also found by analysis that augite usually contained more lime, less alumina, and no fluoric acid; which last, though not always found in hornblende, often enters into its composition in minute quantity. The Student's Elements of Geology The result of this analysis is interesting, because both the ancient and modern lavas of Etna consist in like manner of augite, Labradorite, and titaniferous iron. The Student's Elements of Geology This view was confirmed by the fact that Mitscherlich and Berthier were able to make augite artificially, but could never succeed in forming hornblende. The Student's Elements of Geology Lastly, Gustavus Rose fused a mass of hornblende in a porcelain furnace, and found that it did not, on cooling, assume its previous shape, but invariably took that of augite. The Student's Elements of Geology The chief part consists of red decomposing scoriae, associated with various kinds of tuff and yellow argillaceous beds, full of broken crystals, those of augite being particularly large. Volcanic Islands Thus, in augite, the lime may be in part replaced by portions of protoxide of iron, or of manganese, while the form of the crystal, and the angle of its cleavage planes, remain the same. The Student's Elements of Geology Parts of the original skeleton, consisting of carbonate of lime, are still preserved; while certain inter-spaces in the calcareous fossil have been filled up with serpentine and white augite. The Student's Elements of Geology Thus trachyte is usually porphyritic; for in it, as in many modern lavas, there are crystals of feldspar; but in some porphyries the crystals are of augite, olivine, or other minerals. The Student's Elements of Geology In the valley of Tia-auru, the commonest rocks are basalts with much olivine, and in some cases almost composed of large crystals of augite. Volcanic Islands The mass contains numerous broken crystals of olivine and augite, and small particles of black and brown scoriae; it is often traversed by thin seams of calcareous matter. Volcanic Islands The lava of these streams is of similar composition with that of the pinnacle, excepting that the crystals of albite appear to be more comminuted, and the grains of fused augite are absent. Volcanic Islands These feldsparites sometimes form mountain masses almost without any admixture of other minerals; but at other times they include augite, which passes into hypersthene. The Student's Elements of Geology These rocks possess an extremely varying character; they consist of black, brown, and grey, compact, basaltic bases, with numerous crystals of augite, hornblende, olivine, mica, and sometimes glassy feldspar. Volcanic Islands A common variety is almost entirely composed of crystals of augite with olivine. Volcanic Islands The basalt in some parts abounds with large crystals of augite and olivine, and is generally compact. Volcanic Islands Near the coast there are several varieties of basalt, some abounding with large crystals of augite and tarnished olivine, others compact and earthy,—some slightly vesicular, and others occasionally amygdaloidal. Volcanic Islands |
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