| 单词 | haematite |
| 释义 | haematite noun[U] geologyUKspecialized(UShematite)uk/ˈhiː.mə.taɪt/us/ˈhiː.mə.taɪt/acommondarkredorgreyrockfrom whichironisobtained 赤铁矿（深红或灰色的常见矿石，可提炼出铁） RHJ/iStock/Getty Images Plus/GettyImages Geology: types of rock
Examplesofhaematitehaematite This study concentrates on the latter which contain abundant chlorite-rich layers, commonly rich in magnetite andhaematitegrains. From theCambridge English Corpus The red colour of the dolomite is due to abundanthaematitecrystallites that grew in the dolomite crystal fabric. From theCambridge English Corpus Thus, dolomite vein formation andhaematiteprecipitation were two distinct events, which likely record different conditions. From theCambridge English Corpus Rather,haematiteprecipitation postdated the dolomite and took advantage of the dolomite crystal fabric. From theCambridge English Corpus The nodules are dispersed throughout a clay andhaematite-rich matrix. From theCambridge English Corpus In addition,haematiteis commonly present, to locally abundant. From theCambridge English Corpus The calcination ofhaematitefrom a lower to a higher temperature could be used to monitor the water content in the lattice. From theCambridge English Corpus These observations indicate that the dolomite andhaematitewere not precipitated as two coeval minerals. From theCambridge English Corpus The pink colour is the product ofhaematitestaining of the crinoid ossicles prior to growth of the syntaxial cement. From theCambridge English Corpus The magnetization in the veins, schist and sandstones is interpreted to have been acquired when thehaematitewas precipitated. From theCambridge English Corpus This is supported by petrographic studies of these samples that revealed skeletal magnetite with borders altered tohaematite. From theCambridge English Corpus Where the schist is reddened around the dolomite veins, the reddened portions similarly contain an intermixture of dolomite andhaematite. From theCambridge English Corpus Thesehaematite-rich 'berries ' weather out of the rock and are strewn across the surface. From theCambridge English Corpus This is supported by the presence of authigenichaematite. From theCambridge English Corpus Depending on the particle size,haematitehas been categorized as red (grain diameter less than 10 mm) and grey (grain diameter over 10 mm). From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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