How to use biotite in a sentence

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Sentence Examples The matrix is dominantly felsic, but also contains biotite, muscovite, epidote and titanite. Associated with the quartz are crystals of almandine, kyanite, biotite, and magnesite. The spotted textures are marked by the growth of biotite, cordierite and andalusite on the metamorphic foliation. Monazite clusters occur in a variety of host minerals, including cordierite, quartz, biotite and andalusite. Zircon commonly forms curved tetragonal crystals that radiate from a base of biotite crystals and terminate in adjacent feldspar. Secondary titanite, chlorite, white mica and pyrrhotite are abundant, and some samples contain metamorphic biotite. Although dark minerals such as biotite and hornblende are usually present, giving the rock a speckled appearance, they are never abundant. All four samples are medium-grained, and comprise variable proportions of hornblende, feldspar and quartz with accessory biotite and titanite. These microfaults are commonly pulled apart with growth of new quartz and biotite between pulled apart feldspar and hornblende. In most of the intrusion, hornblende and biotite are both present, but occasionally either may constitute the sole mafic phase. This granulite consists of garnet, biotite, muscovite, quartz, plagioclase and cordierite. The intervening host-rock layers are between 2 and 5 cm thick, being composed of biotite, sillimanite, garnet, muscovite, quartz and plagioclase. The deposit was interpreted to have formed by the replacement of biotite by vermiculite under the influence of pegmatitic fluids. The basement is mainly composed of quartz biotite norite and minor serpentinite which belong to the Ordovician Boganclough intrusion. The sample contains the mineral assemblage garnet, staurolite, biotite and rare epidote. Furthermore, the textural evidence implies that the main hydrous minerals in this rock, staurolite and biotite, largely predate garnet growth. It is composed of quartz, oligoclase, and microcline, with minor garnet, biotite, muscovite and iron-oxides. Major mineral phases include plagioclase and pyroxene, with small amounts of opaque minerals, olivine, apatite, and sometimes biotite. The central potassic zone is characterized by the presence of potassium-bearing minerals such as orthoclase and biotite. This is because this mineral was always observed as fine-grained inclusions parallel to the cleavage of biotite crystals. Show More Sentences The more altered dykes of the Black Coast have groundmasses of clinopyroxene, plagioclase and rare biotite. It is unclear when the biotite gneisses were imbricated with the cover units or what controlled the imbrication. The biotite melts incongruently at the highest grades with the production of orthopyroxene and ilmenite. The metabasites typically contain coarse-grained hornblende, biotite and plagioclase with accessory titanite. The Bakfjord Granite contains quartz, K-feldspar, biotite, plagioclase, epidote, allanite, muscovite and occasional garnet. Like zircon, quartz, plagioclase, biotite and hornblende, major phenocryst phases, also show variable resorbtion effects. The rock consists of plagioclase, K-feldspar, quartz, clinopyroxene and biotite, with abundant apatite, and ilmenite. It consists of quartz, K-feldspar, plagioclase, biotite and white mica, and in places displays a graphic texture. More commonly, anhedral masses are found interleaved with giant biotite crystals. In this method, clear sticky tape was pressed firmly into sample areas and rapidly pulled away, removing thin flakes of biotite with the tapes. The foliation in the lowest unit is locally overgrown by porphyroblasts of andalusite and by biotite. Fine-grained biotite, muscovite and recrystallized quartz grains define the shear foliation. The Borve Series is dominated by varieties of quartzo-feldspathic schist and gneiss, composed mainly of plagioclase, quartz, and biotite. The sample is weakly banded amphibolite-facies gneiss consisting of quartz, plagioclase, biotite and hornblende. The more pelitic samples contain euhedral orthopyroxene residual biotite, and dendritic ilmenite grains. All five rock samples are mineralogically simple, and comprise mainly muscovite, quartz and feldspar with accessory epidote and biotite. In addition some also contain hornblende and epidote, the latter in part replacing biotite. The sample is strongly foliated and consists of garnet, biotite, quartz, plagioclase and cordierite. It is dominated by variably foliated, medium-grained, even-textured to porphyritic biotite hornblende tonalite and quartz diorite. The pegmatites are composed of K-feldspar, quartz, plagioclase and biotite, with titanite, opaque minerals and apatite as accessory minerals. Show More Sentences Although biotite is capable of this, other minerals such as muscovite, garnet and cordierite are more efficient and preferentially occur in strongly peraluminous rocks. Quartz, microcline or orthoclase and plagioclase are ubiquitous in the Everest granites, which also contain varying amounts of tourmaline, muscovite, biotite and garnet. Aligned igneous minerals of euhedral potassium feldspar, plagioclase, biotite and hornblende in an undeformed quartz matrix define a magmatic foliation. Garnet is typically recrystallized and is wrapped around by biotite. Textures of kyanite, xenotime and monazite, and some staurolite and biotite, indicate that peak metamorphic mineral growth occurred after D 2 deformation. In contrast to South Achill, peliticlithologies are characterized by the virtual absence of prograde chlorite and chloritoid, whereas biotite is significantly more abundant. The titanite grains from Zones 1 and 2 show marginal growth interstitial to newly grown crystals of metamorphic minerals such as plagioclase, biotite and zoisite. The colour is clear and some inclusions of biotite and melt are present. Detailed elemental and isotopic studies of this crystal fractionation pathway have indicated the importance of mafic phases, notably calcic clinopyroxene and biotite. The stretching lineation is commonly defined by biotite and by recrystallized plagioclase in tails surrounding rotated, moderately retrograded, garnet porphyroclasts. Foliation-parallel quartz veins are cross-cut and extended along microfaults, the sense of offset indicating the same shear sense as indicated by the biotite rhombs. Willman reported astrophyllite, biotite, molybdenite, and riebeckite associated with smoky quartz and microcline on Mount Kineo at North Cheyenne Canyon. This crystal was glassy and was found associated with smoky quartz, microcline-perthite, biotite, zircon, bastnasite, and limonite after siderite. The dominant non-clay mineral composition of the coarse fraction consists of biotite, quartz, and sanidine with lesser amounts of apatite and zircon. The semi-pelites usually consist of biotite, quartz, plagioclase and untwinncd feldspar, and garnet forms abundant porphyroblasts in some varieties. Some biotite crystals form perfectly euhedral plates, others show a reaction rim rich in opaque granules towards the surrounding microfelsitic base. Quartz, feldspar, white mica and biotite are all major constituents. Accessory chlorite, magnetite or ilmenite, titanite, apatite, partly chloritized biotite, epidote, pyrite and sometimes cummingtonite, are present. The mylonitic foliation, which is defined by biotite, quartz, titanite and epidote, is deflected around the porphyroclasts. Rhyolite tuffs contain pumiceous, glassy fragments and small scoriae with quartz, alkali feldspar, biotite, etc. Show More Sentences Its sheer size, rich colour and fine protective biotite shell make it difficult to see deep into the gem. A flake of biotite near the tree's roots provided nourishment and was the only source of potassium in the soil, Bonneville says. For example, granite, a common rock, is a combination of the minerals quartz, feldspar and biotite. The dominant rocks are biotite schist, granitic gnesis, garnetiferous amphibolite and quartzite. The dominant rock type is a megacrystic biotite granite, although the megacrysts are relatively small. The different zones are strong propylite, argillic, sericitic and potassic alteration hosted in a biotite, feldspar quartz porphyry. Among other minerals found in them are biotite, chlorite, tourmaline, epidote, apatite, garnet, hornblende, augite, sphene and pyrites. Plants are shallowly and weakly rooted in a silt soil containing biotite mica and albite feldspars. Schlieren consists of biotite, amphibole, zircon, allanite, monazite, magnetite, and fluorite. Fluid-absent melting of biotite in metapelites in the early stages of crystal anatexis. Trachyte tuffs contain little or no quartz but much sanidine or anorthoclase and sometimes oligoclase feldspar, with occasional biotite, augite and hornblende. Among the crystalline schists of many regions, green beds or green schists occur, which consist of quartz, hornblende, chlorite or biotite, iron oxides, feldspar, etc. Specifically, they are located within the Scrag Lake biotite monzogranite pluton in which quartz, K-feldspar, plagioclase, and biotite are the major mineral constituents. It may contain minor amounts of hornblende, biotite and other minerals. Numerous large hornblende crystals and 3 mm long flakes of brown biotite are aligned with each other, which indicates deformation along with magmatic crystallization. The outer archways, which were added later in 1907, are a pink, massive, coarse-grained, K-feldspar porphyritic biotite granite containing biotite psammite xenoliths. Examples from Classical Literature More rarely biotite and augite exhibit the same relations to the plagioclase. There is some sericite present, also magnetite, resulting from the decomposition of the biotite. In other cases the spheroids are simply dark rounded lumps of biotite, in fine scales. Hornblende and biotite are the ferromagnesian constituents and vary much in relative importance. Green augite and hypersthene form a considerable part of these rocks, they may contain also biotite, hornblende and quartz. They are of trachytic appearance, containing phenocysts of sanidine, leucite, augite and biotite. We pushed the ship against a small banded berg, from which Wordie secured several large lumps of biotite granite. In other minerals the measurements are not quite the same as in biotite. The dark matrix consists of biotite, aegirine-augite and melanite. The minerals at contact are quartz, biotite, magnetite and hornblende. Find more words! 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Words that rhyme with biotite What is the plural of biotite? What is the adjective for biotite? What is the noun for biotite? Use our Sentence Generator Nearby Words biotin biotic potential biotic factors biotic factor biotic biotherapy biotope biotopes biotoxin biotransformation bioturbation biotype 7-letter Words Starting With b bi bio biot bioti biotit