How to use nepheline in a sentence

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Sentence Examples The intermediate zone consists of massive lilac-gray sodalite with inclusions of nepheline, dark green aegirine, and pale green fluorapatite. It has also been found in silica-poor igneous rocks, such as syenite, nepheline syenite, serpentinite, and lamprophyre. Familiar examples include nepheline, leucite, and members of the sodalite and cancrinite groups. Additionally, lamproites may contain leucite, richterite, sanidine, and occasionally nepheline, whereas kimberlites do not. Finally, the eastern side of the mountain is mostly peralkaline nepheline syenites and porphyrites. Quartz, nepheline, and olivine, which are occasionally present, produce quartz, nepheline, and olivene monzonites. Properties of nepheline, leucite, sodalite, and cancrinite are summarized below. All basalt chemical compositions can be plotted in the basalt tetrahedron, which has normative quartz, olivine, nepheline and augite at the apices. The sodalite syenite can contain local concentrations of cancrinite, nepheline and aegirine. Sheldrickite occurs in a marble xenolith in the nepheline syenite intrusive unit close to a large unit of hornfels. The new mineral petarasite occurs as irregular grains in a xenolith in the nepheline syenite at Mont St-Hilaire, Quebec. Hydrothermally the mineral decomposes to nepheline and analcime at 445° C and 1.0 kbar, and analcime at 330° C and 0.5 kbar. Kaliophilite is the high-temperature form of kalsilite, the potassium-rich variety of nepheline. It is a pale gray to beige colored rock by comparison with the more common nepheline syenite, which is uniformly dark gray. It was first collected by Quintin Wight in 1994 at a contact between a vein of fine-grained albite and the host rock, nepheline syenite. The groundmass of these leucocratic segregations is heterogeneous, consisting of centimeter-scale regions dominated by nepheline, natrolite, alkali feldspar, or wollastonite. The three commonest feldspathoids are leucite, nepheline, and sodalite. It occurs in a marble xenolith included in a nepheline syenite, associated with pectolite, apophyllite, quartz and minor aegirine. Production of nepheline syenite in the Blue Mountain near Peterborough gives Canada a world monopoly in a compound which has a wide range of uses, particularly in the ceramic industry. It occurs as clear tabular crystals up to 2 mm, fibrous cluster, poorly formed prismatic crystals, and chalky to earthy or pwdery patches in sodalite syenite xenoliths in the nepheline syenite. Show More Sentences Natrolemoynite is a new member of the lemoynite group found in altered or unaltered pegmatites cutting nepheline syenite at the Poudrette quarry, Mont Saint-Hilaire, Québec. Hilairite occurs as small, very pale brown, transparent crystals in miarolitic cavities and as flesh-pink porcelain-like opaque crystals in altered pegmatites in nepheline syenite at Mont St. Hilaire, Quebec. A simple test often used to help identify nepheline is based on the fact that it, as well as sodalite and cancrinite, reacts with acids to form gelatinous silica. Formulations were later developed based on kaolin with quartz, feldspars, nepheline syenite or other feldspathic rocks. The mineral is present in vugs in nepheline syenite, marble xenoliths, sodalite syenite xenoliths, and pegmatite dikes at Mont Saint-Hilaire, Quebec. This statistical market research report covers feldspar, leucite, nepheline and nepheline syenite. The mineral is transparent to translucent and occurs as tan, rusty brown and colorless crystalline masses, and rarely as transparent euhedral crystals, in an inclusion of sodalite syenite in nepheline syenite. Carnegieite is synthetic, high-temperature nepheline. Silica minerals thus occur only in magmas containing more than about 47 percent by weight of SiO2 and are incompatible with minerals with low cation:silica ratios such as olivine, nepheline, or leucite. They are found in alkalic rocks such as nepheline syenites and phonolites, wherein they are associated with orthoclase, feldspathoids, augite, and sodium-rich amphiboles. It can be found in the nepheline syenite in proximity to various pegmatitic structures, and rarely in hornfels, marble xenoliths and miarolitic cavities. Marcasite is found rarely at MSH, it occurs in narrow fracture cavities and fissures in hornfels, or in nepheline syenite close to hornfels contact. Examples from Classical Literature They are chiefly leucite and nepheline rocks, such as leucitite, leucitophyre and nephelinite, but basalt and trachyte also occur. Leucite and nepheline rocks have been found in various parts of the island, especially in the south-west. These last consist of an intermixture of nepheline or sodalite and alkali-felspar. Typical nepheline-dolerites are scarce, and consist of idiomorphic augite, surrounded by nepheline. Phonolite is a trachytic rock, composed essentially of sanidine, nepheline, and augite or hornblende. They are rich in leucite, but contain also some sanidine and often much nepheline with hauyne or nosean. The flows from Kibo include nepheline and leucite basanite lavas rich in soda felspars. The largest of these streams is that from the Niedermendig, which consists of porous masses of nepheline lava. The pyroxene is morphic, yellow or green, and is surrounded by formless areas of nepheline. The nepheline is in small six-sized prisms, and usually cannot be detected with the unaided eye. The former contain a low-Ca pyroxene and the latter can crystallize nepheline. Sodalite or hauyne may also be present, but nepheline is typically absent. Nepheline appears to decrease in amount as leucite increases. Other resources are Nepheline Syenite, phosphates, gemstones, and metallic minerals including gold and base metals and variety of other industrial minerals. Find more words! 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Words that rhyme with nepheline What is the plural of nepheline? Use our Sentence Generator Nearby Words nepeta nepenthes nepenthe Nepali Nepalese Nepal nephelinite nephelometer nephelometers nephew Nephew nephews 9-letter Words Starting With n ne nep neph nephe nephel nepheli nephelin