How to use feldspar in a sentence

Looking for sentences and phrases with the word feldspar? Here are some examples.

Sentence Examples Closer to the contact microcline is replaced by sanidine, and perthitic exsolution in detrital alkali feldspar begins to disappear. Zircon commonly forms curved tetragonal crystals that radiate from a base of biotite crystals and terminate in adjacent feldspar. Minerals such as feldspar, which are insoluble in water, will not give a positive test. Its most abundant mineral is feldspar, which accounts for two-thirds of the Earth's crust. The rock is cemented by a mixture of quartz overgrowths, K-rich feldspar, and an oxidized ferruginous clay now dominated by chlorite. Strain shadows around feldspar porphyroclasts contain recrystallized potassium feldspar, plagioclase and quartz. The reappearance of feldspar in the detritus probably indicates erosion of a less mature source area. The granodiorite deposits at Aswan are often gneissoid in texture, exhibiting parallel orientated feldspar phenocrysts. All five rock samples are mineralogically simple, and comprise mainly muscovite, quartz and feldspar with accessory epidote and biotite. Quartz is associated most commonly with aegirine and potassium feldspar as well as zircon. When the sandstone contains appreciable quantities of feldspar the rock is called arkose. The fault places massive fractured greenstones over relatively undeformed feldspar andesite porphyry. Invisible traces of quartz, calcite, gypsum and feldspar, the dust of its resting place for more than two millennia, cling to the bronze. The plagioclase feldspar weathers to produce a whitish gray rock, while the mafic minerals produce contrasting darker grains. It is important to note that potassium feldspar did not deform in a ductile fashion during post-peak-metamorphic deformation. Sericite is fine-grained muscovite formed by alteration of such minerals as feldspar, cordierite, and sillimanite. In 1977 and 1978 about 5,000 short tons of potassium feldspar were mined from the Blue Spar. 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. Along the vein wall, adjacent to the country rock, are fine-grained quartz, feldspar, and chlorite. Show More Sentences Extreme cases are found in mineral groups such as apatite, amphibole, pyroxene, feldspar, and tourmaline. Feldspar is dominated by microcline, but plagioclase and perthitic feldspar are also present. There are no secondary sodic phases present, and no observed albitization of potassium feldspar, suggesting only limited Na mobility. In practice many basalts also contain easily visible crystals of feldspar, pyroxene, olivine, or amphibole. Graphic granite is a regular intergrowth of quartz and feldspar that gives an angular appearance suggestive of cuneiform writing. These granite dikes are composed almost totally of potassium feldspar and quartz. The siltstones are composed of angular quartz and rare feldspar, set in a finer matrix that locally contains some calcite. A plagioclase feldspar, albite probably, occurs as parallel growths of transparent colorless to yellowish crystals. The fragments are angular and the feldspar fragments fresh, although there are considerable amounts of chloritic alteration products. The siltstones contain poorly sorted angular fragments of quartz, and angular clasts and cleavage fragments of plagioclase and alkali feldspar. In the vein's central vug, ferroaxinite overlies a selvage of quartz, orthoclase, and microcline feldspar and is followed by fine-grained calcite. The semi-pelites usually consist of biotite, quartz, plagioclase and untwinncd feldspar, and garnet forms abundant porphyroblasts in some varieties. It is a reddish brown sandstone formed by detrital quartz, plagioclase, feldspar and muscovite, with subordinate apatite, zircon and opaque minerals. Larger crystals of feldspar and quartz dominate the host rock. Quartz, feldspar, white mica and biotite are all major constituents. The conversion of feldspar to cristobalite involves the removal of water. It includes vast deposits of coal, limestone, slabs, oil and natural gas, manganese, asbestos, iron ore, gold, diamonds, graphite, tungsten, steatitic, feldspar, and silica. At least two Eocene feldspar porphyry dykes or sills intrude Tsa da Glisza, and appear to have followed the same planes of weakness as the aplite dykes. The first phase of diagenetic albite constitutes an impure, turbid variety including albitized grains of original plagioclase and alkali feldspar. The province is also endowed with other non-traditional minerals including nickel, feldspar, emerald, limestone, granite, amethyst, sodalite and syenite. Show More Sentences The groundmass of these leucocratic segregations is heterogeneous, consisting of centimeter-scale regions dominated by nepheline, natrolite, alkali feldspar, or wollastonite. Of these, alkali feldspar, particularly orthoclase, is the most common. A slightly bluish-gray feldspar, probably either microcline or orthoclase, without polysynthetic twinning lines occurs as crystals to 2 cm across. Aligned igneous minerals of euhedral potassium feldspar, plagioclase, biotite and hornblende in an undeformed quartz matrix define a magmatic foliation. Especially noteworthy in thin section is the scarcity of potassium feldspar in any of the igneous clast types in this section. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Other raw materials can include feldspar, ball clay, glass, bone ash, steatite, quartz, petuntse and alabaster. For example, granite, a common rock, is a combination of the minerals quartz, feldspar and biotite. In the case of the alkali feldspar minerals, thin white albite layers will alternate between typically pink microcline. In most sedimentary rocks, mica, feldspar and less stable minerals have been reduced to clay minerals like kaolinite, illite or smectite. When a granitoid is devoid or nearly devoid of plagioclase, the rock is referred to as alkali feldspar granite. This tourmalinisation occurred during the late stages of cooling of the granite, as feldspar and mica were partly replaced by tourmaline. Some of the feldspar phenocrysts are more than 1 cm long, but most are less than 5 mm. The island is rich in minerals such as ilmenite, feldspar, graphite, silica, kaolin, mica and thorium. Other products being mined or being studied are mercury, tin, copper, lead, sand, fluorite, feldspar, lime, kaolin, and more. Rhyolite tuffs contain pumiceous, glassy fragments and small scoriae with quartz, alkali feldspar, biotite, etc. Some varieties include feldspathic greywacke, which is rich in feldspar, and lithic greywacke, which is rich in tiny rock fragments. For example, orthoclase is typically feldspar from granite, while its modifications occur in lavas of similar composition. If the rock has a greater percentage of alkali feldspar, it grades into a syenite. Feldspar separates consisted of alkali feldspar, either albitic plagioclase or potassium feldspar, or mixtures of both. Show More Sentences It is a fine, usually white clay formed by the weathering of aluminous minerals such a feldspar, a plastic clay mineral kaolinite. Plagioclase is often replaced by alkali feldspar and varies in composition from andesine to oligoclase. Skeletal feldspar grains contain ankerite rhombs, and tiny sphalerite, galena, barite, and siderite crystals. These minerals include sheet kaolinite, vermiform kaolinite, k-feldspar, pyrite crystals, corrosion quartz and corrosion feldspar. Kaolinization of the feldspar has also occurred in the oxidized beds, although it primarily involved the plagioclase. The most important property of feldspar is its tendency to form crystalline mineral leucite when melted. This statistical market research report covers feldspar, leucite, nepheline and nepheline syenite. Analyses using a polarizing light microscope aids in identification of cellulose and various minerals such as quartz and feldspar. The feldspar fraction is dominantly altered orthoclase feldspar and perthitic ortho-clase feldspar with traces of microcline and plagioclase. Rhyolite consists of feldspar microlites, quartz, and minor K-feldspar, and exhibits only weak alteration. Pegmatite is coarsely crystalline with individual feldspar crystals reaching up to 10 cm in length. Most sandstone is composed of quartz or feldspar because these are the most common minerals in the Earth's crust. In the volcanic beds illite-smectite, kaolinite, and potassium feldspar dominate. This met the requirements of the ceramics industry and extended the reserves of high potassium feldspar ore available to the Monticello facility. The different zones are strong propylite, argillic, sericitic and potassic alteration hosted in a biotite, feldspar quartz porphyry. The texture of andesite is generally porphyritic, with phenocrysts of feldspar and ferromagnesian minerals. Quartz occurs as euhedral grains, which, however, began to crystallize later than the intratelluric feldspar megacrysts. However, quartz, feldspar, several clay minerals, bayerite and calcite were common in sediment samples. Anhydrite, potassium feldspar and magnetite as alteration minerals. Its amount increases abruptly close to the contacts of the anorthosites with silicic rocks, where perthitic alkali feldspar partly replaces plagioclase. Show More Sentences The sample consists of light grey, sparsely porphyritic, aphanitic rhyolite with potassium feldspar, and lesser amounts of quartz and granophyre phenocrysts. Plagioclase is commonly the only feldspar phyric phase in the felsic to intermediate volcanic clasts, including lapilli and vitric tuff and probable ash-flow tuff. Turkey possesses known deposits of 77 of the 90 marketable minerals, most notably boron, feldspar, marble, baryte, celestite, emery, limestone, magnesite, perlite and pumice. The beads in this set were made using a range of materials, predominantly carnelian and turquoise, but also nephrite jade, microcline feldspar and other blue-green stones. 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. Trachyte tuffs contain little or no quartz but much sanidine or anorthoclase and sometimes oligoclase feldspar, with occasional biotite, augite and hornblende. Many of the granites contain large alkali feldspar phenocrysts. As demonstrated in the following reaction, this causes potassium feldspar to form kaolinite, with potassium ions, bicarbonate, and silica in solution as byproducts. Chemical weathering of granite occurs when dilute carbonic acid, and other acids present in rain and soil waters, alter feldspar in a process called hydrolysis. For instance, a granite that is formed from melted sediments may have more alkali feldspar, whereas a granite derived from melted basalt may be richer in plagioclase feldspar. The pavements on Queen Street are composed of the rock diorite and exhibit feldspar crystals, while those around Princesshay are composed of granodiorite. In this series, quartz is the most stable, followed by feldspar, micas, and finally other less stable minerals that are only present when little weathering has occurred. Later, the composition of the Meissen hard paste was changed and the alabaster was replaced by feldspar and quartz, allowing the pieces to be fired at lower temperatures. Lifetime determination of OSL signals from potassium feldspar. Examples from Classical Literature These waters deposited around the spring a brecciated mass of quartz and feldspar, much of it of a reddish color. Orthoclase and microcline feldspar are used in the manufacture of porcelain and chinaware. Some special varieties of feldspar are cut or polished for semiprecious stones or decorative purposes. I do hope I 'll get one with feldspar in it, or something nice and interesting. According to the color of the feldspar the rock may be red, or pink, or gray. Sienite and feldspar succeeded in our descent to the snow line, where we found a feldspathic granite. Some of the greenstone is handsomely porphyritic, and embraces green crystals of feldspar. The feldspar exhibited its splendent black crystals in fine relief in the massy quartz. Granite is made of quartz, mica, and feldspar, as has been said before. Clay is a product of the natural disintegration of feldspar. Vitrification or densification is due to the feldspar or fusible sand. With quartz, then, feldspar is of great importance in the forming of soil. The mineralisation is associated with quartz feldspar gneiss, amphibolite, garnet bearing amphibolite, and micaceous amphibolites. When flint and feldspar are used, they are ground fine at the quarry. Both feldspar and kaolin are described in the preceding chapter. Find more words! Another word for Opposite of Meaning of Rhymes with Sentences with Find word forms Translate from English Translate to English Words With Friends Scrabble Crossword / Codeword Words starting with Words ending with Words containing exactly Words containing letters Pronounce Find conjugations Find names From Afrikaans From Albanian From Amharic From Arabic From Armenian From Azerbaijani From Basque From Belarusian From Bengali From Bosnian From Bulgarian From Catalan From Cebuano From Chichewa From Chinese From Corsican From Croatian From Czech From Danish From Dutch From Esperanto From Estonian From Farsi From Filipino From Finnish From French From Frisian From Galician From Georgian From German From Greek From Gujarati From Haitian Creole From Hausa From Hebrew From Hindi From Hmong From Hungarian From Icelandic From Igbo From Indonesian From Irish From Italian From Japanese From Javanese From Kannada From Kazakh From Khmer From Korean From Kurdish From Kyrgyz From Lao From Latin From Latvian From Lithuanian From Luxembourgish From Macedonian From Malagasy From Malay From Malayalam From Maltese From Maori From Marathi From Mongolian From Burmese From Nepali From Norwegian From Polish From Portuguese From Punjabi From Romanian From Russian From Samoan From Scots Gaelic From Serbian From Sesotho From Shona From Sinhala From Slovak From Slovenian From Somali From Spanish From Sundanese From Swahili From Swedish From Tajik From Tamil From Telugu From Thai From Turkish From Ukrainian From Urdu From Uzbek From Vietnamese From Welsh From Xhosa From Yiddish From Yoruba From Zulu To Afrikaans To Albanian To Amharic To Arabic To Armenian To Azerbaijani To Basque To Belarusian To Bengali To Bosnian To Bulgarian To Catalan To Cebuano To Chichewa To Chinese To Corsican To Croatian To Czech To Danish To Dutch To Esperanto To Estonian To Farsi To Filipino To Finnish To French To Frisian To Galician To Georgian To German To Greek To Gujarati To Haitian Creole To Hausa To Hebrew To Hindi To Hmong To Hungarian To Icelandic To Igbo To Indonesian To Irish To Italian To Japanese To Javanese To Kannada To Kazakh To Khmer To Korean To Kurdish To Kyrgyz To Lao To Latin To Latvian To Lithuanian To Luxembourgish To Macedonian To Malagasy To Malay To Malayalam To Maltese To Maori To Marathi To Mongolian To Burmese To Nepali To Norwegian To Polish To Portuguese To Punjabi To Romanian To Russian To Samoan To Scots Gaelic To Serbian To Sesotho To Shona To Sinhala To Slovak To Slovenian To Somali To Spanish To Sundanese To Swahili To Swedish To Tajik To Tamil To Telugu To Thai To Turkish To Ukrainian To Urdu To Uzbek To Vietnamese To Welsh To Xhosa To Yiddish To Yoruba To Zulu English French Afrikaans Word Albanian Word Arabic Word Bengali Word Chinese Word Croatian Word Czech Word Danish Word Dutch Word English Word Finnish Word French Word German Word Greek Word Hindi Word Hungarian Word Icelandic Word Indonesian Word Italian Word Japanese Word Korean Word Latin Word Malay Word Malayalam Word Marathi Word Nepali Word Norwegian Word Polish Word Portuguese Word Romanian Word Russian Word Serbian Word Slovak Word Spanish Word Swahili Word Swedish Word Tamil Word Telugu Word Thai Word Turkish Word Ukrainian Word Uzbek Word Vietnamese Word Welsh Word All words 2-letter words 3-letter words 4-letter words 5-letter words 6-letter words 7-letter words 8-letter words 9-letter words 10-letter words 11-letter words 12-letter words 13-letter words 14-letter words Plural of Singular of Past tense of Present tense of Verb for Adjective for Adverb for Noun for Meaning of name Origin of name Names meaning Names starting with Names of origin feldspar Use * for blank tiles (max 2) Advanced Search Advanced Search Use * for blank spaces Advanced Search Advanced Word Finder See Also Words that rhyme with feldspar What is the plural of feldspar? What is the adjective for feldspar? What is the noun for feldspar? Use our Sentence Generator Nearby Words feldsher Feldenkrais felafel Feit feisty feistiness feldspathic Felice felicia Felicia felicidad felicific 8-letter Words Starting With f fe fel feld felds feldsp feldspa